Features: variable gain control; gold plated RCA inputs; high level MOLEX inputs; power on LED; easy access speaker connections; accepts high or low impedance inputs; 4-8 ohm output impedance. Frequency response: 20-30 kHz, S/N ratio: >85dB. For 12-volt negative-ground systems. Peak output: 75 Watts x 4. Size: 8"W x 8"L x 2"H.