Wet Sounds™ Hydro-Tech™ X (HTX) Series Amplifier. Wet Sounds represents the ultimate in High Performance Marine Audio. Wet Sounds HTX Series Marine Amplifiers are designed to be a complete solution for every type of extreme marine application. HTX amplifiers use superior performance circuitry by utilizing Class D Power Supplies. These amplifiers have extreme power output packed inside a small chassis, thermal overload protection, flexible crossovers, extended inputs. HTX amplifiers are a well balanced match for all of the Wet Sounds™ products.
Specifics:
RMS Power @ 4 ohm Mono    330 x 1 watts RMS @ < 1.0% THD    
RMS Power @ 2 ohm Mono: 650 x 1 watts RMS @ < 1.0% THD
Input Sensitivity: Variable from 0.2V to 6.0V
Frequency Response -3dB: 10Hz-150Hz
Bass Boost: 0db -12db @ 45Hz
Crossover Range Low Pass: 50Hz - 150Hz 12dB/Octav     
Crossover Range Subsonic Filter: 10Hz - 50Hz 12dB/Octav     
Remote Attenuation: +0.7 - -29dB     
S/N Ratio (Awtg): >59dB (1 watt 4 Ohm) >92dB (125 watts 4 Ohm)
Note: All specifications are for each HTX1