The Crunch Pza1200.4 is a 4-channel power amplifier with 300 watts of power for each channel to ensure proper handling of sustained music reproduction. A signal to noise ratio of greater than 90 dB of this Crunch car amplifier ensures a high-fidelity sound output. Channel separation of more than 80 db of this 4-channel power amplifier offers crystal clear sound on all 4 channels. The Crunch Pza1200.4 has LED indicators for power and protection, which provide accurate readings of the power/protection status. With built-in protection from DC, thermal, overload, and speaker short conditions, this Crunch car amplifier proves durable.