Car Audio Subwoofer Amplifier - Monoblock, Class A/B, 340W N3823

Monoblock amplifier; Class AB topology 2Ω stable; PWM MOSFET Power supply RCA and speaker level inputs Variable bass boost 0-12dB; Variable Low-pass filter 50-250Hz; Variable input gain control 0.2-8V Full range or LPF mode switch Thermal and speaker short protection; Soft turn-on circuit LED power and protection indicators; Auto-turn on(high level)  Remote subwoofer controller