Used Sundown Audio SALT1.5 Amplifier

3,000 x 1 @ 2 ohms RMS (when linked) 1,500 x 1 @ 1 ohm RMS mono 750 x 1 @ 2 ohms RMS mono 400 x 1 @ 4 ohms RMS mono 24dB variable subsonic filter: 10HZ - 50HZ 24dB variable low pass filter: 35HZ - 250HZ Variable bass boost @ 45Hz 0-9dB Digital Class-D Linkable Mono Block Amplifier Phase shift control 0-180 degrees Power, clipping & protection indicators included Thermal, voltage, speaker short, and dc-offset protection circuitry  Included wired remote control displays voltage, temperature, and clipping  Producing optimum power at realistic voltages (the 12s, rather than needing 14+ volts), the SALT – Sundown Audio Low-Voltage Technology – is Sundown’s answer! SALT amplifiers represent the pinnacle of Korean Class-D amplifier technology. Whether you are a world-class SPL competitor or a hardcore sound quality fan, the SALT series will be right at home in your system.  Specifications Input Sensitivity : 6V - 0.2V Efficiency : 90% < Signal / Noise Ratio : 90DB < Damping Factor : 400 < Frequency Response : 10 Hz – 250 HZ Tested Voltage & THD : 12.8V & Less Than 1% THD Operation Voltage : DC 9V - 15.5V Power Input Recommended Fuse : 160 Amps Dimensions : 7.87” L x 8.67” W x 2.80” H