4 channel amp specs
http://www.sonicelectronix.com/item_8857_Power+Acoustik+OV4-840.html
840W Max, Gothic Series 4-Channel Amplifier
RMS Power Output:
4 ohms: 80 watts x 4 channels
2 ohms: 95 watts x 4 channels
Bridged, 4 ohms: 190 watts x 2 channels
PWM MOSFET power supply
Chrome top plate with blue LED indicator
Variable low-pass crossover (40-120 Hz)
Variable high-pass crossover (150-1,500 Hz)
Variable 18 dB bass boost at 40 Hz
Tri-Mode capable
3-Way protection circuit
High/low-level inputs
4 gauge power/ground connectors
RCA line outputs with floating ground
Frequency Response: 10 Hz - 30,000 Hz
Dimensions: 11.25"L x 11.25"W x 2.25"H
1-year Manufacturer's warranty
Amplifier Class N/A
Number of Channels 4
RMS Power (4 ohms) 80 watts x 4 channels
RMS Power (2 ohms) 95 watts x 4 channels
RMS Power (1 ohm) Not Stable
Bridged RMS Power 190 watts x 2 channels
Total RMS Power 380 watts
Peak Power Output 840 watts
Minimum Impedance Unbridged 2 ohms
Minimum Impedance Bridged 4 ohms
THD at Rated RMS Power 0.02%
Speaker Level Inputs Yes
Preamp Outputs Yes
Built-in Crossover Yes - HP/LP
High-Pass Crossover Frequency 150 - 1,500 Hz
Low-Pass Crossover Frequency 40 - 120 Hz
Subsonic Filter N/A
Signal-to-Noise Ratio 98 dB
Channel Separation N/A
Bass Boost +18 dB
Bass/Gain Remote N/A
Fan Cooled N/A
Fuse Rating N/A