shitty boss and a sony here's the specs.
BOSS- Amplifier Type: Mono
RMS Power @ 4 Ohms: 400W x 1 @ 4 Ohms
THD at 4-Ohm RMS Power: 0.01 %
Bridged RMS Power @ 4 Ohms: 600W x 1 @ 2 Ohms
Speaker Level Inputs: yes
Preamp Outputs : yes
Built-In Crossovers: LP
Bass Boost: 0 - 18 dB
Frequency Response: 20-20,000 Hz
Signal to Noise Ratio: 102 dB
Fuse Rating: n/a
SONY-200 watts RMS x 2 at 4 ohms
250 watts RMS x 2 at 2 ohms
500 watts RMS x 1 at 4 ohms
stereo or bridged mono output
Tri-way capable (Tri-Way Crossover required)
CEA-2006 compliant
requires 4-gauge power and ground leads Â? wiring and hardware not included with amplifier
MOSFET power and output stages
preamp- and speaker-level inputs
preamp outputs
gold-plated connectors
variable low-pass crossover (50-300 Hz, 12 dB/octave)
variable bass boost (0-10 dB at 40 Hz)
15-3/4"W x 2-3/16"H x 10-