MB QuartFA1-900.5 5 Channel Car Audio Amplifier (Black) - Class SQ Amp, 900-Watt, Variable Electronic Crossover, LED System Protection, Heavy Duty Connections, Bass Remote Included

It’s a 5 channels amp. 4 speakers & 1 subwoofer.

Its a pretty good amp but directions dont tell u what need to hook up for incoming 5th channel rca port an the hook up power ,ground ,remote,an speaker hook up r allen heads an should an have been phillip head an you have to take a trim off to access the connections

Sounds awesome. Rocks my 32 Plymouth. Complete system of MB Quart. Two 10's and set of 6.5 tweeter combos. Setting at 155 db.

The rfi is bad/ Engine noise is terrible. I've tried everything to get rid of it. Nothing works. I guess mb quarts isn't what they used to be.

i'm running 8 speakers (4 channels, 2-4ohm speakers per, 2 ohm load) plus a sub. i'm surprised at the quality and level of sound i'm getting. bought a less expensive amp because it's a cheap car, totally satisfied with how well the system sounds. the 12" sub absolutely slams

Fast shipper works as expected

This amp produces so much electrical noise on its own it's no even funny. I'm talking with the car not running, there is still a lot of electrical noise. I replaced a pair of older amps with this one and the amps I had in before were dead silent. I was hoping to just use one amp vs. using two but not sure I can tolerate the noise. Yes, I am using high end RCA cables run down the opposite side of any electrical equipment. The noise is coming from the amp, it's not alternator whine.

Does the job, but power is over rated.