Digital monaural power amplifier 1100W x 1 maximum output power 350W continuous output power (20Hz - 20kHz into 4 ohms @ THD ≤ 1%) Gold-plated RCA connectors and speaker terminals Adjustable bass boost control (0dB - 15dB) 50Hz - 250Hz adjustable LPF and HPF (Crossover) Speaker level input Easy level adjustment after installation (200mV - 6V) Switchable input model for high-level and low-level Servo drive circuit for PWM DC-DC converter Line-out for another power amplifier Thermal shutdown protection circuit Indication LED Blue illumination