Class A/B2 Ohm stereo -mode capable Bridgeable Full MOSFET DC-DC PWM Power Supply4-way protection High level inputs with auto turn-on Low-level inputs (RCA)Variable high-pass crossover (50Hz - 500Hz, @12dB/octave)Variable low-pass crossover (50Hz - 500Hz, @12dB/octave)Variable bass boost @45Hz (0dB - 12dB)Variable gain control2 AWG power and ground terminal block4 AWG speaker wire terminal block Power Requirements: 14.4V DC (11V to 16V)Input Sensitivity: 250mV - 6VFrequency Response: 10Hz - 35kHz (-3dB)Speaker Impedance: 4Ohm or 2OhmSignal to Noise: > 90dB (THD 250