Per sonicelectronix website:
Q Series 4-Channel Class A/B Car Amplifier
RMS Power Rating (14.4V):
4 ohms: 75 watts x 4 chan.
2 ohms: 100 watts x 4 chan.
Bridged, 4 ohms: 200 watts x 2 chan.
Optically isolated MOSFET power supply
LED power indicator
Fixed Bass Boost (+12 dB bass boost at 40 Hz)
Soft Start Turn-on
4/3/2 Channel operation
Band pass crossover on front channels
Bi-Polar High-current output devices
Auxiliary full range output
Two-layer PC Board with heavy 2 oz copper
Massive ground planes and precision caps
3-Way System Protection circuitry (thermal, overload, and speaker short protection)
Heavy duty aluminum alloy heatsink for extreme heat dissipation
Nickel-plated RCA level inputs
Nickel-plated screw terminals
Low level: 150mV-5V
Variable low-pass filter (50-5000 Hz, 12 dB/octave)
Damping factor: >100
In-line fuse requirement: 80 amps
Frequency response: 10-30,000 Hz
Signal-to-Noise ratio: 100dB
Dimensions: 13.0"L x 8-1/2"W x 2-1/4"H
My review I did:
I purchased this amplifier to swap with a Rockford Fosgate "T" series amplifier. Night and day difference. The Amplifier produces a very crisp clean signal. Clamped number per channel are as follows for my setup:
Ch.1 and 2 - 84w @ 3.6ohm - Midbass drivers
Ch. 3 and 4 - 82w @ 3.8ohm - Tweeters
So therefore the amplifier is slightly under rated. Using the on board crossover features the amplifier is running four midbass drivers and 4 tweeters. Very detailed midbass from 50hz and up unlike the rockford which lacked anything and had distortion below 120hz. With small amounts of amperage draw at high volumes this amplifier is a great factory add on. It looks very sleek as well.
My only con would be it has close to no heat sync fins to help with cooling. With that said mount this amplifier with ample airflow!