Designed to Deliver Infinity's Signature Sound They feature edge-driven textile tweeters for smooth, clear highs and the larger models ofter an adjustable tweeter output level control for optimization based on installation location. Oversized Plus One™ woofers offer more surface area for higher bass output and enhanced midrange performance. Plus our newly engineered basket is optimized to fit most factory openings. Available in a range of standard sizes‚Äî3", 4", 5-1/4", 6-1/2", 6" x 8" and 4" x 6" coaxial, 6" x 9" 3-way, and 5-1/4", 6-1/2", and 6" x 9" component‚Äîthey're the perfect upgrade from factory speakers. Edge-Driven, Textile Tweeters The tweeters in Infinity Reference speakers play smooth, never-harsh regardless of output level. Adjustable Tweeter Output Level The larger Reference coaxial models and the component systems offer a tweeter output level control of 0dB or +3dB to optimize system linearity based on installation location. Plus One™ Woofer Cone Architecture Harman's patented (US patent #7,548,631) Plus One™ cones provide more overall speaker-cone area than other cones in its class ‚Äî the result is higher sensitivity, increased low-frequency output and greater musical character. Optimized Frame Size Reference speakers are available in a range of standard sizes, and feature a compact design that allows them to fit in just about any vehicle on the road today. That means signature Infinity sound in more vehicles. Competitive Pricing Reference speakers provide signature Infinity sound at affordable prices.
Legendary Products & Support From Authorized Dealers
When you choose Infinity, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & Training
Only authorized Infinity dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty Protection:
We offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don't be misled by unauthorized sellers who can't provide genuine warranty support.
▸ Reliable Customer Support:
If you ever run into an issue, you're backed by Infinity's official manufacturer's warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your Investment:
Buying from an authorized dealer ensures you're getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few dollars worth losing all that?
Choose wisely. Buy from an authorized Infinity dealer today!
Designed to Deliver Infinity's Signature Sound They feature edge-driven textile tweeters for smooth, clear highs and the larger models ofter an adjustable tweeter output level control for optimization based on installation location. Oversized Plus One™ woofers offer more surface area for higher bass output and enhanced midrange performance. Plus our newly engineered basket is optimized to fit most factory openings. Available in a range of standard sizes‚Äî3", 4", 5-1/4", 6-1/2", 6" x 8" and 4" x 6" coaxial, 6" x 9" 3-way, and 5-1/4", 6-1/2", and 6" x 9" component‚Äîthey're the perfect upgrade from factory speakers. Edge-Driven, Textile Tweeters The tweeters in Infinity Reference speakers play smooth, never-harsh regardless of output level. Adjustable Tweeter Output Level The larger Reference coaxial models and the component systems offer a tweeter output level control of 0dB or +3dB to optimize system linearity based on installation location. Plus One™ Woofer Cone Architecture Harman's patented (US patent #7,548,631) Plus One™ cones provide more overall speaker-cone area than other cones in its class ‚Äî the result is higher sensitivity, increased low-frequency output and greater musical character. Optimized Frame Size Reference speakers are available in a range of standard sizes, and feature a compact design that allows them to fit in just about any vehicle on the road today. That means signature Infinity sound in more vehicles. Competitive Pricing Reference speakers provide signature Infinity sound at affordable prices.
Legendary Products & Support From Authorized Dealers
When you choose Infinity, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & Training
Only authorized Infinity dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty Protection:
We offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don't be misled by unauthorized sellers who can't provide genuine warranty support.
▸ Reliable Customer Support:
If you ever run into an issue, you're backed by Infinity's official manufacturer's warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your Investment:
Buying from an authorized dealer ensures you're getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few dollars worth losing all that?
Choose wisely. Buy from an authorized Infinity dealer today!
Designed to Deliver Infinity's Signature Sound
They feature edge-driven textile tweeters for smooth, clear highs and the larger models ofter an adjustable tweeter output level control for optimization based on installation location. Oversized Plus One™ woofers offer more surface area for higher bass output and enhanced midrange performance. Plus our newly engineered basket is optimized to fit most factory openings. Available in a range of standard sizes‚Äî3", 4", 5-1/4", 6-1/2", 6" x 8" and 4" x 6" coaxial, 6" x 9" 3-way, and 5-1/4", 6-1/2", and 6" x 9" component‚Äîthey're the perfect upgrade from factory speakers.
Edge-Driven, Textile TweetersThe tweeters in Infinity Reference speakers play smooth, never-harsh regardless of output level.
Adjustable Tweeter Output LevelThe larger Reference coaxial models and the component systems offer a tweeter output level control of 0dB or +3dB to optimize system linearity based on installation location.
Plus One™ Woofer Cone ArchitectureHarman's patented (US patent #7,548,631) Plus One™ cones provide more overall speaker-cone area than other cones in its class ‚Äî the result is higher sensitivity, increased low-frequency output and greater musical character.
Optimized Frame SizeReference speakers are available in a range of standard sizes, and feature a compact design that allows them to fit in just about any vehicle on the road today. That means signature Infinity sound in more vehicles.
Competitive PricingReference speakers provide signature Infinity sound at affordable prices.
Legendary Products & Support From Authorized Dealers
When you choose Infinity, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & Training
Only authorized Infinity dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty Protection:
We offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don't be misled by unauthorized sellers who can't provide genuine warranty support.
▸ Reliable Customer Support:
If you ever run into an issue, you're backed by Infinity's official manufacturer's warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your Investment:
Buying from an authorized dealer ensures you're getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few dollars worth losing all that?
Choose wisely. Buy from an authorized Infinity dealer today!
Allows You to Upgrade to an Aftermarket Head Unit Whilst Maintaining Use of Your Factory Steering Wheel Controls Features: Plug and play, no cutting of wires required Retains phone button functionality Retains factory reverse camera (if vehicle is equipped) Retains 360-degree camera functionality Retains Amplified System Provides outputs for speed pulse, park brake and reverse gear Note: Due to multiple vehicle facelifts & updates, it is recommended to confirm the connectors on the back of the head unit before purchasing. Specifications: Plug & Play – YES – FACTORY CONNECTOR TO BARE WIRES Include AUX/USB retention? – YES – AUX & USB Retain 360 camera system? – Yes – If equipped from factory Dual Press Steering Wheel Control Function – NO Retain Factory Amplifier? – YES – Factory Amplifier is 2CH Audio Input so no fading capabilities Retain Factory Reverse Camera? – YES – Included With Interface Retain Factory Steering Wheel Audio Controls? – YES – Will retain Steering Wheel Audio Controls with Select Aftermarket Radios Connectors – 24, 28, 6, 10 PIN Vehicle Compatibility: Toyota Landcruiser Prado 2014 – 2019 (150 Series) with 360 Degree Camera System Toyota Kluger2018 – 2019 (Xu50 Series) with 360 Degree Camera
Legendary Products & Support From Authorized Dealers
When you choose Autoleads, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & Training
Only authorized Autoleads dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty Protection:
We offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don't be misled by unauthorized sellers who can't provide genuine warranty support.
▸ Reliable Customer Support:
If you ever run into an issue, you're backed by Autoleads's official manufacturer's warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your Investment:
Buying from an authorized dealer ensures you're getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few dollars worth losing all that?
Choose wisely. Buy from an authorized Autoleads dealer today!
Designed To Deliver Infinity's Signature Sound They feature edge-driven textile tweeters for smooth, clear highs and the larger models ofter an adjustable tweeter output level control for optimization based on installation location. Oversized Plus One™ woofers offer more surface area for higher bass output and enhanced midrange performance. Plus our newly engineered basket is optimized to fit most factory openings. Available in a range of standard sizes‚Äî3", 4", 5-1/4", 6-1/2", 6" x 8" and 4" x 6" coaxial, 6" x 9" 3-way, and 5-1/4", 6-1/2", and 6" x 9" component‚Äîthey're the perfect upgrade from factory speakers. Edge-Driven, Textile Tweeters The tweeters in Infinity Reference speakers play smooth, never-harsh regardless of output level. Adjustable Tweeter Output Level The larger Reference coaxial models and the component systems offer a tweeter output level control of 0dB or +3dB to optimize system linearity based on installation location. Plus One™ Woofer Cone Architecture Harman's patented (US patent #7,548,631) Plus One™ cones provide more overall speaker-cone area than other cones in its class ‚Äî the result is higher sensitivity, increased low-frequency output and greater musical character. Optimized Frame Size Reference speakers are available in a range of standard sizes, and feature a compact design that allows them to fit in just about any vehicle on the road today. That means signature Infinity sound in more vehicles. Competitive Pricing Reference speakers provide signature Infinity sound at affordable prices.
Legendary Products & Support From Authorized Dealers
When you choose Infinity, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & Training
Only authorized Infinity dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty Protection:
We offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don't be misled by unauthorized sellers who can't provide genuine warranty support.
▸ Reliable Customer Support:
If you ever run into an issue, you're backed by Infinity's official manufacturer's warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your Investment:
Buying from an authorized dealer ensures you're getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few dollars worth losing all that?
Choose wisely. Buy from an authorized Infinity dealer today!
Highlights: FEATURES: VEHICLE COMPATIBILITY: Highlights: FEATURES: AFTERMARKET RADIO MUST HAVE REAR USB INPUT & REAR AUX INPUT. RETAINS FACTORY USB SOCKET.
Legendary Products & Support From Authorized Dealers
When you choose Autoleads, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & Training
Only authorized Autoleads dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty Protection:
We offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don't be misled by unauthorized sellers who can't provide genuine warranty support.
▸ Reliable Customer Support:
If you ever run into an issue, you're backed by Autoleads's official manufacturer's warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your Investment:
Buying from an authorized dealer ensures you're getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few dollars worth losing all that?
Choose wisely. Buy from an authorized Autoleads dealer today!
USB/AUX Retention Kit Is Used when Replacing Your Factory Radio in Your Hyundai/Kia Vehicle Features: Aftermarket Radio Must Have Rear USB Input & Rear AUX Input Suits Hyundai / KIA Vehicles With White Illuminated Backlighting On USB & AUX In Vehicle Retains Factory USB Socket Retains Factory AUX Socket Vehicle Compatibility: Hyundai Accent 2011 - 2018 Hyundai i20 2012 - 2015 Hyundai i30 2012 - 2016 Hyundai i40 2012 - 2018 Hyundai ix35 2010 - 2015 Kia Cerato 2013 - 2018 Kia Picanto 2016 - 2017 Kia Pro Ceed 2014 - 2015 Kia Rio 2010 - 2014
Legendary Products & Support From Authorized Dealers
When you choose Autoleads, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & Training
Only authorized Autoleads dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty Protection:
We offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don't be misled by unauthorized sellers who can't provide genuine warranty support.
▸ Reliable Customer Support:
If you ever run into an issue, you're backed by Autoleads's official manufacturer's warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your Investment:
Buying from an authorized dealer ensures you're getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few dollars worth losing all that?
Choose wisely. Buy from an authorized Autoleads dealer today!
Honda USB Retention Adaptor The Retention Kit is used when replacing your factory radio in your select Honda vehicle.
Legendary Products & Support From Authorized Dealers
When you choose Autoleads, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & Training
Only authorized Autoleads dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty Protection:
We offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don't be misled by unauthorized sellers who can't provide genuine warranty support.
▸ Reliable Customer Support:
If you ever run into an issue, you're backed by Autoleads's official manufacturer's warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your Investment:
Buying from an authorized dealer ensures you're getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few dollars worth losing all that?
Choose wisely. Buy from an authorized Autoleads dealer today!
Highlights: What's In The Box: Similar Products Infinity BASSLINK DC Amplified Vehicle Subwoofer $699.00 Infinity RBC Remote Bass Control for Infinity Ampl $39.00 Highlights: SPECIFICATIONS: GENERAL TYPE 10” SHALLOW MOUNT SUBWOOFER POWER HANDLING (PEAK) 800W POWER HANDLING (RMS) 200W
Legendary Products & Support From Authorized Dealers
When you choose Infinity, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & Training
Only authorized Infinity dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty Protection:
We offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don't be misled by unauthorized sellers who can't provide genuine warranty support.
▸ Reliable Customer Support:
If you ever run into an issue, you're backed by Infinity's official manufacturer's warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your Investment:
Buying from an authorized dealer ensures you're getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few dollars worth losing all that?
Choose wisely. Buy from an authorized Infinity dealer today!
Rockford Fosgate PBR400X4D Punch 400 Watt 4-Channel Class D Amplifier
When space is tight but power cannot be compromised, the PBR400X4D delivers 400 watts of full-range Punch Series performance in one of the most compact 4-channel footprints Rockford Fosgate makes.
Product Overview
The PBR400X4D is a full-range Class D 4-channel amplifier from Rockford Fosgate's Punch Series, engineered specifically for installations where space is at a premium. Powered by Boosted Rail Technology (BRT), an ultra-efficient proprietary power supply design, it generates 400 watts of total RMS output while keeping current draw low enough to suit trucks, sub-compact vehicles, electric vehicles, and hybrids where electrical system demand is a critical consideration. The amplifier operates at 4 ohm or 2 ohm stereo and 4 ohm bridged/mono, with selectable fixed 12 dB/octave Butterworth crossovers covering High-Pass and Low-Pass filter positions. A variable DC offset high-level input circuit with signal-sense turn-on simplifies integration with OEM head units and factory systems. MEHSA3 thermal management handles heat dissipation through an extruded aluminium heatsink, while real-time output and power supply thermal sensing monitors operating conditions continuously. The C.L.E.A.N. clip detection system uses a tri-colour LED indicator that identifies exact THD levels rather than just clipping events, giving a precise read on signal quality. Muted turn-on prevents transient noise through the speakers during power-up. CEA-2006 and CE compliant, with a 1-year warranty, designed and engineered in the USA.
Features & Benefits
Boosted Rail Technology (BRT): Rockford Fosgate's proprietary ultra-efficient power supply design generates 400 watts of output while minimising current consumption from the vehicle's charging system, making the PBR400X4D well suited to electric, hybrid, and sub-compact vehicles where alternator and battery capacity is limited.
C.L.E.A.N. Clip Detection with Tri-Colour LED: The C.L.E.A.N. input and output clip indicator uses a three-colour LED system to provide precise distortion feedback: Blue indicates less than 0.5% THD (clean signal), Violet indicates 1% THD (approaching clip), and Red indicates 10% THD or greater (clipping). This is a more detailed read of signal quality than a standard clip light.
MEHSA3 (Maximum Efficiency Heat Sink Application): Reduces MOSFET operating temperatures, lowers distortion levels, increases overall durability, and extends the lifespan of output devices under sustained use, working in combination with the extruded aluminium heatsink for convection cooling.
Real-Time Thermal Sensing: Continuous monitoring of both the output stage and power supply thermal conditions allows the amplifier to respond to temperature changes proactively, protecting internal components during demanding listening sessions.
DSM Circuit Technology: 1% tight-tolerance surface-mount components improve circuit efficiency, reduce crosstalk between discrete components, and lower operating temperature throughout the signal path.
Variable DC Offset High-Level Turn-On: The hi-level input includes a variable DC offset sensitivity circuit for reliable signal-sense turn-on across a wide range of factory head units and OEM systems, with no remote turn-on wire required when using high-level inputs.
Remote-Out Feature: When using high-level inputs, the PBR400X4D provides a Remote-Out signal that can be used to trigger downstream components, simplifying multi-component installations without a separate remote turn-on distribution.
Selectable Fixed Crossovers: High-Pass crossover is selectable at 60 Hz or 80 Hz at 12 dB/octave Butterworth. Low-Pass crossover is fixed at 80 Hz at 12 dB/octave Butterworth, providing straightforward speaker and subwoofer integration without continuous adjustment.
2/4 Channel Input Switch: A 2-channel to 4-channel input switch allows a single stereo RCA source to feed all four output channels, simplifying installation in vehicles with limited source unit outputs.
Compact Stealth Design: At 1.53" x 4.25" x 6.75", the PBR400X4D is designed for concealed installations in tight spaces, including under seats, behind panels, and in factory amplifier locations.
Muted Turn-On: Output is muted during the power-up sequence to prevent transient noise from passing through the speakers at switch-on.
CEA-2006 and CE Compliant: All power ratings conform to CEA-2006 industry measurement standards at 14.4V with 1% or less THD. No inflated peak figures are used anywhere in the specifications.
Technical Specs
Specification
Detail
SKU
PBR400X4D
Series
Punch
Number of Channels
4
Amplifier Class
Class D, Full Range
Total RMS Power
400W
RMS Power @ 4 Ohm
50W x 4
RMS Power @ 2 Ohm
100W x 4
Bridged Power @ 4 Ohm
200W x 2
Dynamic Power @ 4 Ohm
75W x 4
Dynamic Power @ 2 Ohm
130W x 4
Dynamic Power Bridged @ 4 Ohm
270W x 2
Bridgeable
Yes
Minimum Impedance (Stereo)
2 Ohm
Minimum Impedance (Bridged)
4 Ohm
Frequency Response
20 Hz - 20 kHz +/- 1 dB
THD @ 4 Ohm
<1.0%
THD @ 2 Ohm
<1.0%
Average Efficiency
>75%
Input Sensitivity
150 mV - 12V
Signal Input (Low-Level)
2 x Pair RCA
Signal Input (High-Level)
4-Pin Harness, variable DC offset sensitivity
Input Switch
2-channel / 4-channel
Signal Output
None
High-Pass Crossover
60 Hz or 80 Hz @ 12 dB/octave Butterworth (selectable)
Low-Pass Crossover
80 Hz @ 12 dB/octave Butterworth (fixed)
Tone Controls
None
Remote Controls
None
Visual Indicators
POWER (Blue), PROTECT (Red), INPUT CLIP (Red), OUTPUT CLIP (Blue/Violet/Red)
LED Colour Legend
Blue: <0.5% THD, Violet: 1% THD, Red: 10% THD or greater
Operating Voltage
9-16V DC
Average Current Draw (13.8V Music)
27A
Max Current Draw (13.8V Sinewave)
50A
Suggested Alternator
75A
Recommended Fuse
60A (not included)
Power Wire Gauge
8 AWG
Speaker Wire Gauge
16 AWG
Power Input Connector
Detachable Compression Terminal
Speaker Output Connector
Front: 4-Pin Harness, Rear: 4-Pin Harness
Cooling
Convection / Extruded Aluminium Heatsink (MEHSA3)
Dimensions (H x W x D)
1.53" x 4.25" x 6.75" (3.9 cm x 10.79 cm x 17.16 cm)
Shipping Weight
3.1 lbs (1.4 kg)
Warranty
1 Year
Compliance
CEA-2006, CE
Goes Well With
The PBR400X4D pairs naturally with Rockford Fosgate Punch Series full-range speakers across the front and rear channels, including the P1 and P2 coaxial and component speaker ranges. When bridged to 2-channel operation at 4 ohms, it can also serve as a compact, space-saving subwoofer amplifier in smaller builds. For systems requiring a dedicated subwoofer channel alongside speaker amplification, the onboard 80 Hz Low-Pass crossover option makes it straightforward to cross over rear channels to a subwoofer. Note that this amplifier uses 4-pin harness speaker connectors rather than standard terminal blocks; confirm harness compatibility with the installation vehicle before purchase. An 8-gauge amplifier wiring kit is required for power and ground runs.
Frequently Asked Questions
What does Boosted Rail Technology (BRT) mean, and why does it matter for electric or hybrid vehicles?
Boosted Rail Technology is Rockford Fosgate's proprietary ultra-efficient power supply architecture used in the PBR400X4D. It generates 400 watts of output while keeping current draw significantly lower than a conventional Class AB amplifier of equivalent power. At 13.8V music, average current draw is just 27A, and the suggested alternator rating is 75A. This makes the PBR400X4D well suited to electric vehicles, hybrids, and sub-compact vehicles where the electrical system capacity is more restricted than a conventional petrol-powered vehicle.
Does the PBR400X4D need a remote turn-on wire?
When using high-level speaker inputs, no remote turn-on wire is required. The variable DC offset high-level input circuit detects the incoming speaker signal automatically and powers the amplifier on. When using RCA inputs, a standard remote turn-on wire from the head unit is required. Additionally, the Remote-Out feature provides a trigger output when the amplifier is running from high-level inputs, which can be used to activate downstream components.
What does the tri-colour output clip LED indicate, and how is it different from a standard clip light?
The PBR400X4D's C.L.E.A.N. output clip indicator uses three colour states rather than a simple on/off clip light. Blue indicates the signal is clean at less than 0.5% THD. Violet indicates the signal is approaching the clip threshold at 1% THD. Red indicates the signal is clipping at 10% THD or greater. This tri-colour system allows gain to be set more accurately during installation without an external measurement tool.
Are the crossover points adjustable, or are they fixed?
The crossover points on the PBR400X4D are selectable but fixed, not continuously variable. The High-Pass crossover can be set to either 60 Hz or 80 Hz. The Low-Pass crossover is fixed at 80 Hz. All crossovers operate at 12 dB/octave Butterworth slope. For installations requiring precise variable crossover control, an upstream DSP such as the DSR1 would be needed.
What speaker connector type does the PBR400X4D use, and do I need a special harness?
The PBR400X4D uses 4-pin harness connectors for both front and rear speaker outputs rather than standard screw or compression terminal blocks. This is part of the compact, stealth-install design. Confirm that compatible 4-pin speaker harnesses are available for the installation vehicle or amplifier location before purchase, as standard bare-wire speaker connections are not supported directly on this amplifier.
Legendary Products & Support From Authorized Dealers
When you choose Frankies BrandBeast, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & TrainingOnly authorized Frankies BrandBeast dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty ProtectionWe offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don’t be misled by unauthorized sellers who can’t provide genuine warranty support.
▸ Reliable Customer SupportIf you ever run into an issue, you’re backed by Frankies BrandBeast’s official manufacturer’s warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your InvestmentBuying from an authorized dealer ensures you’re getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few bucks worth losing all that?
Choose wisely. Buy from Frankies BrandBeast today!
Two channels. BRT efficiency. Built for motorcycles, ATVs, and stealth installs.
Product Overview
The Rockford Fosgate PBR300X2 is a 2-channel amplifier from the Punch series, delivering 300W total using Rockford Fosgate's patented BRT (Boosted Rail Technology). Unlike conventional 2-channel amplifiers that rely on a switching power supply to generate their output, BRT achieves rated power through an ultra-efficient design that eliminates the switching stage entirely resulting in a chassis significantly smaller than a traditional amplifier of equivalent output. Total power is 300W across two channels; power per channel and impedance breakdown are not specified in supplier-provided data.
The PBR300X2 is positioned for installations where space and electrical draw are primary constraints. Motorcycles requiring stereo speaker output, ATVs, and recreational vehicles with limited mounting real estate are the target use cases along with stealth car and marine builds where a standard amplifier chassis simply won't fit. The variable 4–6V hi-level DC offset turn-on circuit allows direct integration with OEM speaker outputs in systems that don't provide a dedicated remote turn-on wire, while high-level inputs eliminate the need for an aftermarket head unit or RCA outputs. A 12dB/octave Butterworth crossover and MOSFET output stage complete a practical, installation-friendly feature set.
Key Specifications
Channels: 2
Total output power: 300W (power per channel and impedance breakdown — not specified)
Power supply technology: BRT (Boosted Rail Technology — no switching power supply)
Output stage: MOSFET
Crossover: 12dB/octave Butterworth (frequency range — not specified)
Signal input: High level
Turn-on method: Variable hi-level DC offset (4–6V)
Chassis: Ultra-compact
Bridgeable: Not specified
Frequency response: Not specified
Input sensitivity: Not specified
Nominal impedance: Not specified
CEA compliance: Not specified in provided data
Power wire gauge: Not specified
Speaker wire gauge: Not specified
Operating voltage: Not specified
Recommended fuse: Not specified
Dimensions: Not specified
Features & Benefits
BRT (Boosted Rail Technology) — No Switching Power Supply — The PBR300X2 uses Rockford Fosgate's patented BRT architecture to produce rated power without a conventional switching power supply. This reduces current draw, minimises electrical noise, and shrinks the chassis to a fraction of the size of a traditional 2-channel amplifier — making it viable for vehicle types and install locations that would otherwise rule out amplification entirely.
Ultra-Compact Chassis — Stereo Power in a Stealth Footprint — Where the PBR300X1 delivers mono output for a single driver, the PBR300X2 provides two independent channels from the same compact BRT platform. This makes it the logical choice for motorcycle stereo builds — left and right speaker channels from a single unit that installs in a saddlebag, underseat compartment, or within a fairing. Exact dimensions are not specified in supplier data — confirm with Rockford Fosgate before planning a space-critical install.
Variable Hi-Level DC Offset Turn-On (4–6V) — Motorcycles, ATVs, and many OEM car audio systems either lack a dedicated remote turn-on output or carry a DC offset on their speaker outputs. The PBR300X2's variable DC offset circuit detects a 4–6V signal on the speaker inputs and uses it to power the amplifier — removing the need to source and run a remote wire in installations where doing so is difficult or impossible.
High-Level Inputs — Accepts signal directly from the speaker outputs of a factory head unit, OEM radio, or handlebar-mounted controller. No line output converter or aftermarket head unit is required, keeping the installation simple and the component count low — particularly relevant for motorcycle and recreational vehicle builds where simplicity and reliability matter.
MOSFET Output Stage — The MOSFET output stage contributes to the compact, efficient character of the PBR300X2 and handles the variable voltage and vibration conditions common in motorcycle and off-road vehicle environments more reliably than earlier output stage designs. It also supports the BRT architecture's low-heat operating profile.
12dB/Octave Butterworth Crossover — The on-board Butterworth crossover allows the two output channels to be filtered, directing appropriate frequency ranges to different speakers in a system. The crossover frequency range is not specified in supplier data — confirm with Rockford Fosgate before planning a multi-speaker install.
Technical Specs
Specification
Detail
Channels
2
Total output power
300W
Power per channel
Not specified
Power by impedance
Not specified
Power supply
BRT — no switching power supply
Output stage
MOSFET
Circuit topology
Not specified
Frequency response
Not specified
Input sensitivity
Not specified
THD+Noise
Not specified
Nominal impedance
Not specified
Bridgeable
Not specified
Crossover type
12dB/octave Butterworth
Crossover frequency range
Not specified
Signal input
High level
Turn-on method
Variable hi-level DC offset, 4–6V
CEA compliance
Not specified
Power wire gauge
Not specified
Speaker wire gauge
Not specified
Operating voltage
Not specified
Recommended fuse
Not specified
Dimensions
Not specified
Weight
1.27 kg
Compatible With / Goes Well With
The PBR300X2 is confirmed by the manufacturer for use in the following applications:
Motorcycles requiring 2-channel (stereo) speaker amplification
ATVs and off-road recreational vehicles
Smaller stealth car, marine, or custom installations with limited space
OEM/factory audio systems (via variable hi-level DC offset turn-on)
Goes well with:
Compact 2-channel speakers suited to motorcycle, ATV, or stealth car audio builds
Factory head units and OEM audio systems (high-level input compatible)
Marine or weatherproof speaker enclosures for recreational vehicle applications
Frequently Asked Questions
What is BRT (Boosted Rail Technology) and why does it matter for a 2-channel amp?
BRT is Rockford Fosgate's patented amplifier architecture that generates rated power without a switching power supply. The result is a significantly smaller and more efficient chassis than a conventional 2-channel amplifier — making stereo amplification viable in motorcycles, ATVs, and stealth builds where space and current draw are limited.
How much power does each channel produce?
Total power is 300W across both channels. The per-channel power rating and impedance breakdown are not specified in supplier-provided data. Contact Rockford Fosgate or your authorised dealer to confirm per-channel output before matching to speakers.
Will the PBR300X2 work on a motorcycle or ATV?
Yes. The PBR300X2 is specifically designed for motorcycles, ATVs, and recreational vehicles. The BRT architecture's low current draw and ultra-compact chassis make it practical for these applications, and the variable DC offset turn-on circuit supports OEM systems that lack a standard remote turn-on output.
What is the variable DC offset turn-on circuit?
Many motorcycle and OEM systems output a 4–6V DC offset on their speaker lines rather than a dedicated remote turn-on signal. The PBR300X2 detects this voltage and uses it to power the amplifier automatically — eliminating the need to wire a separate remote turn-on lead in most factory and recreational vehicle installations.
Can the PBR300X2 be used in a standard car or truck installation?
Yes, though it is engineered primarily for space-constrained and stealth applications. It suits any car or truck installation where a compact chassis, low current draw, and factory head unit compatibility are priorities. Standard amplifier features such as RCA inputs, Punch EQ, and remote level control are not confirmed in supplier data — verify the full feature set with Rockford Fosgate if these are required.
Legendary Products & Support From Authorized Dealers
When you choose Frankies BrandBeast, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & TrainingOnly authorized Frankies BrandBeast dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty ProtectionWe offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don’t be misled by unauthorized sellers who can’t provide genuine warranty support.
▸ Reliable Customer SupportIf you ever run into an issue, you’re backed by Frankies BrandBeast’s official manufacturer’s warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your InvestmentBuying from an authorized dealer ensures you’re getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few bucks worth losing all that?
Choose wisely. Buy from Frankies BrandBeast today!
Small footprint. Serious bass. BRT efficiency for bikes, ATVs, and hybrid vehicles.
Product Overview
The Rockford Fosgate PBR300X1 is a 300W mono subwoofer amplifier from the Punch series, built specifically for vehicles where space and electrical load are genuine constraints. Unlike conventional car amplifiers that rely on a switching power supply, the PBR300X1 uses Rockford Fosgate's proprietary BRT (Boosted Rail Technology) an ultra-efficient design that generates 300W of output without the inefficiencies and electrical noise associated with a traditional switching supply.
The result is an amplifier that draws significantly less current from the vehicle's electrical system, making it an ideal choice for motorcycles, ATVs, and hybrid-electric vehicles where alternator capacity and mounting space are limited. The ultra-compact chassis fits into locations where a conventional amplifier simply won't. A variable hi-level DC offset turn-on circuit (4–6V) allows plug-and-play integration with OEM and factory speaker outputs no dedicated remote turn-on wire required in most motorcycle and recreational vehicle installations. A built-in 12dB/octave Butterworth crossover filters the signal before it reaches your subwoofer, and high-level inputs accept signal directly from factory speaker outputs.
Key Specifications
Channels: 1 (mono)
Output power: 300W (impedance breakdown — not specified by supplier)
Power supply technology: BRT (Boosted Rail Technology — no switching power supply)
Output stage: MOSFET
Crossover: 12dB/octave Butterworth (frequency range — not specified)
Signal input: High level
Turn-on method: Variable hi-level DC offset (4–6V)
Chassis: Ultra-compact
Frequency response: Not specified
Input sensitivity: Not specified
Nominal impedance: Not specified
CEA compliance: Not specified in provided data
Dimensions: Not specified
Power wire gauge: Not specified
Recommended fuse: Not specified
Features & Benefits
BRT (Boosted Rail Technology) — No Switching Power Supply — Conventional amplifiers use a switching power supply to step up battery voltage before amplification. BRT bypasses this stage entirely, achieving 300W of output through a fundamentally different electrical architecture. This reduces current draw, lowers electrical noise, and shrinks the chassis — critical for motorcycles and hybrid vehicles where alternator output and installation space are tightly constrained.
Ultra-Compact Chassis — The PBR300X1 is specifically engineered for installations where a standard amplifier will not physically fit. Saddlebag runs, under-seat motorcycle mounts, ATV storage compartments, and tight boot builds are all viable locations. Exact dimensions are not specified in supplier-provided data — confirm with Rockford Fosgate before planning the install.
Variable Hi-Level DC Offset Turn-On (4–6V) — Many motorcycle and OEM audio systems do not provide a standard 12V remote turn-on output. The PBR300X1 includes a variable DC offset turn-on circuit that detects a 4–6V signal on the speaker outputs and powers the amplifier accordingly — eliminating the need to source and run a dedicated remote wire in most factory and recreational vehicle installations.
High-Level Inputs — Accepts signal directly from the speaker outputs of a factory head unit or OEM radio. No line output converter or aftermarket head unit is required for integration — particularly useful in motorcycle and ATV builds where changing the source unit may not be practical.
MOSFET Output Stage — The MOSFET output stage delivers efficient, low-distortion power to the subwoofer load and contributes to the overall compact, low-heat design of the PBR300X1. MOSFET designs are well regarded for reliability under the variable voltage and vibration conditions common in motorcycle and off-road vehicle environments.
12dB/Octave Butterworth Low-Pass Crossover — The on-board Butterworth crossover filters out midrange and high frequencies before they reach the subwoofer. A 12dB/octave slope provides a smooth, musical roll-off well-suited to subwoofer applications. Crossover frequency range is not specified in provided data — confirm with Rockford Fosgate.
Technical Specs
Specification
Detail
Channels
1 (mono)
Output power
300W total rated
Power by impedance
Not specified
Power supply
BRT — no switching power supply
Output stage
MOSFET
Circuit topology
Not specified
Frequency response
Not specified
Input sensitivity
Not specified
THD+Noise
Not specified
Nominal impedance
Not specified
Crossover type
12dB/octave Butterworth
Crossover frequency range
Not specified
Signal input
High level
Turn-on method
Variable hi-level DC offset, 4–6V
Phase control
Not specified
CEA compliance
Not specified
Power wire gauge
Not specified
Speaker wire gauge
Not specified
Operating voltage
Not specified
Recommended fuse
Not specified
Dimensions
Not specified
Weight
1.25 kg
Compatible With / Goes Well With
The PBR300X1 is confirmed by the manufacturer for use in the following applications:
Motorcycles with factory or aftermarket subwoofer systems
ATVs and off-road recreational vehicles
Hybrid-electric vehicles with limited alternator capacity
Recreational vehicles requiring a compact subwoofer amplifier
OEM/factory audio systems (via high-level DC offset turn-on)
Goes well with:
Compact or shallow-mount subwoofers suited to motorcycle and ATV enclosures
Rockford Fosgate Punch series compact subwoofer drivers
Factory head units and OEM audio systems (high-level input compatible)
Frequently Asked Questions
What is BRT (Boosted Rail Technology) and why does it matter?
BRT is Rockford Fosgate's proprietary amplifier architecture that produces 300W of output without a conventional switching power supply. This reduces current draw, minimises electrical noise, and allows a significantly smaller chassis — making it practical for motorcycles, ATVs, and hybrid vehicles.
Will the PBR300X1 work on a motorcycle or ATV?
Yes. The PBR300X1 is specifically designed for motorcycles, ATVs, and other recreational vehicles where electrical capacity and mounting space are limited. The BRT design keeps current draw low and the chassis small enough for tight installation locations.
What is the variable DC offset turn-on circuit?
Many motorcycles and OEM systems don't have a dedicated remote turn-on output. The PBR300X1 detects a 4–6V DC offset on the speaker inputs and uses this signal to power up the amplifier automatically — simplifying installation in factory and recreational vehicle audio systems.
Does the PBR300X1 include a built-in crossover?
Yes. A 12dB/octave Butterworth low-pass crossover is built in, filtering the signal to suit subwoofer use. The adjustable frequency range is not confirmed in supplier-provided data — contact Rockford Fosgate for details before purchase.
Can the PBR300X1 accept signal from a factory head unit?
Yes. High-level inputs allow direct connection to factory speaker outputs, making integration with OEM systems and motorcycle radios straightforward without the need for a separate line output converter.
Legendary Products & Support From Authorized Dealers
When you choose Frankies BrandBeast, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
▸ Expert Knowledge & TrainingOnly authorized Frankies BrandBeast dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
▸ Authorized Warranty ProtectionWe offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don’t be misled by unauthorized sellers who can’t provide genuine warranty support.
▸ Reliable Customer SupportIf you ever run into an issue, you’re backed by Frankies BrandBeast’s official manufacturer’s warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
▸ Protect Your InvestmentBuying from an authorized dealer ensures you’re getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few bucks worth losing all that?
Choose wisely. Buy from Frankies BrandBeast today!
