Refurbished HTX6: Class D 900 watt 6-channel amplifier This refurbished item carries a 90-day warranty. 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. RMS Power @ 4 ohm Stereo 100 x 6 watts RMS @ <1.0% THD RMS Power @ 2 ohm Stereo 150 x 6 watts RMS @ <1.0% THD RMS Power @ 4 ohm Mono 300 x 3 watts RMS @ <1.0% THD Input Sensitivity Variable from 0.2V to 6.1V Frequency Response -3dB 7Hz-33Hz Bass Boost 0db -12db @ 45Hz Crossover Range Low Pass 50Hz - 150Hz 12dB/Octav Crossover Range Subsonic Filter 10Hz - 50Hz 12dB/Octav Separation >52dB S/N Ratio (Awtg) >62dB (1 watt 4 Ohm) >85dB (125 watts 4 Ohm) RMS Power @ 4 ohm Stereo 100 x 6 watts RMS @ < 1.0% THD RMS Power @ 2 ohm Stereo 150 x 6 watts RMS @ < 1.0% THD RMS Power @ 4 ohm Mono 300 x 3 watts RMS @ < 1.0% THD Input Sensitivity Variable from 0.2V to 6.1V Frequency Response -3dB 7Hz-33Hz