Precision Power S420.2 420 Watt RMS 2-Channel Amplifier 2 ch. Class A/B for Sound Quality, RMS Power into 4 = 130x2, RMS Power into 2 = 210x2, RMS Power into 4 Bridged = 420x1 6dB & 12dB 50Hz Bass Boost High Level or 200mV-6V Low Level Input. Direct 4 ga. Power & 8 ga. Speaker Terminals. 12dB Variable High, Low, & Subsonic Crossovers. 180 Phase Control. Brushed Aluminum Finish. Red Top Panel Accent Lighting.