| Gold Plated Connections Overload, Short and Thermal Protection Circuit Frequency Response: 20 Hz - 20 kHz High Quality Power & Protection LED's 0-18dB Variable Bass Boost 50-250Hz Variable High Crossover 50-250Hz Variable Low Pass Crossover THD @ 4 Ohm <0.05% THD @ 2 Ohm <0.1% 10K Ohm Input Impedance 200mV-4V Input Voltage Range Channel Separation 60dB |