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FLI Audio FU720.4-F1A

720W, 4 Channel FU Class AB Car Amplifier

FLI Audio
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FLI Underground 4-Channel Amplifier • Class AB Circuitry • 70W x 4 Chan. @ 4 ohms • 90W x 4 Chan. @ 2 ohm • 720 Watts Max • Selectable Bass Boost • 4/3/2 Channel Operation • Cooling Fan

Learn more about the fu7204f1a

We apologize

This item has been discontinued

Product Highlights


FLI Underground 4-Channel Amplifier • Class AB Circuitry • 70W x 4 Chan. @ 4 ohms • 90W x 4 Chan. @ 2 ohm • 720 Watts Max • Selectable Bass Boost • 4/3/2 Channel Operation • Cooling Fan

Description


FLI Audio brand icon

Authorized dealer

  • FLI Underground Series 4-Channel Class AB Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 70 watts x 4 chan.
    • 2 ohms: 90 watts x 4 chan.
    • Bridged, 4 ohms: 180 watts x 2 chan.
  • Max power output: 720 watts
  • Pulse Width Modulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Selectable bass boost (0, 6, 12 dB)
  • Soft Start Turn-on
  • 4/3/2 Channel operation
  • Speaker-level (high-level) inputs with signal sensing for automatic turn-on
  • 3-Way System Protection circuitry (thermal, overload, and speaker short protection)
  • Built-in cooling fan keeps the amplifier running more efficiently
  • Heavy duty aluminum alloy heatsink for effective heat dissipation
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Variable high-pass filter (50-300 Hz)
  • Variable low-pass filter (50-300 Hz)
  • Frequency response: 20-20,000 Hz
  • Dimensions: 7-5/8"L x 14"W x 2"H
  • 8-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
70 watts x 4 channel
RMS Power @ 2 ohms
90 watts x 4 channel
Bridged RMS Power
180 watts x 2 channel
Amplifier Specifications
Amplifier Class
A/B
Number of Channels
4-Channel
Total Peak Power Output
720 watts
Total RMS Power Output
360 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
Speaker Level Inputs
Yes
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
50 - 300 Hz
Low-Pass Crossover Frequency
50 - 300 Hz
Bass Boost
0 - 12 dB
Remote bass/level controller
No
Fuse Rating
25A x 2 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

FU720.4-F1A

Weight:

6.28lbs

Internal SKU:

fu7204f1a

Internal Product ID:

32702

Product and How-to Videos


Customer Ratings & Reviews



5 star
60%
4 star
40%
3 star
0%
2 star
0%
1 star
0%



Durability
4.8
Value
4.6
Features
4.4
Design
5
Usability
4.4

Customer Reviews

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good amp great price

this amp looks good ,plays good, runs 2ohm in front, 4ohms for rear.i play it loud everyday.feels hot but never goes above the temperature stated in the install manual. tested with heat gun. it comes with 4 spacers to get airflow clearance when the fan is on,i replace the spacers with taller spacers amp runs much cooler

By vet883 on April 10, 2012

9

found this helpful.

Great privacy for the Value!

The FLI Audio 4 channel amps is more then enough to power your mid and high range speakers. The clarity is prestige and the amount of power this thing puts out for the money is well worth it. I never owned a FLI audio amplifier before this one, but would definitely by from this manufacturer again.

Cons: Amplifier needs to have more settings as far as a high pass filter for the rear speakers on the amp. Just has a low pass and full range.

By The Coffee Man on February 21, 2012

9

found this helpful.

good amp

This is a good amp, sounds good, looks good, perfect for it's price. I might even buy another if it makes my subs sound good too, right now it's hooked up to my 4 kicker ds series speakers.

By jacob on April 23, 2012

8

found this helpful.

Nice amp

Clean sound, nice bass mid and highs. I'm running 4 Boss Audio P69.4C 6X9" speakers in a sealed box, 2 in each box, 2 Bazooka BT1214 12" bass tube. The Boss Audio 6X9" speakers are on the 1&2 channel with the HP set at 50hz, and load at 2ohm. The Bazooka 12" bass tubes are on the 3&4 channel with the LP set at 60hz and bass boost at 6db and load at 4ohm. Amp has a cooling fan, and it runs cool. Sounds real nice in my SUV.

By ALLAN on August 31, 2011

8

found this helpful.

Great Value! Hasn't Overheated!

A great looking Amp, I have it running 2 factory door speakers and 2 12's.

Which works great for that set up, being that the 1&2 channels have the high pass. The 3&4 channels (my subs) have the low pass. The hi low speaker thing didn't work when installed but now works fine. Oh and the fan is small and on the bottom of the amp.

By Manuel T on October 1, 2011

7

found this helpful.

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