FLI FU720.4 4-Channel 720 Watts Class AB Bridgeable Amplifier

FLI Underground, Raising the Bar!

Good News For Your Cruise
The FU Series FU720.4 stereo amplifier will send 70 watts RMS to each of your speakers, while its variable frequency filters and bass boost let you zoom in on the sound you want. The FU720.4 can also be wired to two chanel mode and output 180 RMS for a 4-ohm load x 2 , making it a good choice for driving a subwoofer(s) as well.

This Class AB amp uses a MOSFET power supply and high-current output transistors to deliver strong, reliable power, and it features full short-circuit, DC offset, and thermal protection, so the music won’t stop until you want it to. And why would you want it to? You’ve got Fli Underground on the case.

FLI Underground series designed for easy installation and huge output without breaking the bank the Underground range is guaranteed to get the party started in your ride each and every time you get in. The FU720.4 with up to 720 watts power and 0 – 12dB bass boost at 45Hz. Onboard active crossovers and included high level input converters for perfect tuning and maximum compatibility. Finished with a brushed back extruded aluminium heatsink to keep the amp cool.

Legendary Product & Support From Authorized Dealers 

You’ve decided to buy Fli . That means quality and performance are important to you, so who you buy your new Vibe gear from is just as important. Here are a few reasons to purchase from an authorized dealer and here is why.

Proper Training: Only authorized Fli dealers are factory trained to sell and install our products. They know our products and your vehicle to insure that your new purchase exceeds your expectations!

Authorized Warranty: FLI provides one of the best warranties in the business. Only customers purchasing through authorized dealers receive this comprehensive company warranty. Don’t be fooled by others who promise a full warranty, because it’s simply not true.

Support: if you have an issue you are covered by FLI Australia’s manufactures warranty and all you need to do is send it back in direct to get any warranty issues sorted, not post it back overseas, its all done right here. 

​Protect Your Investment: Protect yourself and your investment by making sure you buy your FLI product form us a online dealer who is part of the FLI family, Ask yourself is it worth saving a few dollars to not be covered?!