Drive four speakers or bridge to a sub with compact Class D efficiency. Rated up to 90W x4 at 2 ohms or 65W x4 at 4 ohms, or 180W x2 bridged, with 1240W peak headroom. Dial in HPF/LPF crossovers (32–320 Hz) and up to +12 dB bass EQ at 45 Hz. Accepts high-level or RCA inputs, with 0.2–5 V sensitivity and full protection for cool, reliable performance.