AudioSource AMP310 2-Channel Power Amplifier Type: Power Amplifier Color: Walnut Other Specifications: Signal to Noise Ratio: 100dBA, referred to 150W, at 8Ohms Power Output: 8Ohms Stereo: 150W x 2 4Ohms Stereo: 225W x 2 8Ohms Bridged: 450W x 1 Frequency Response: 10Hz - 50kHz + 0dB/-3dB Speaker Switching: Speaker A/B Input: 2 Stereo RCA Inputs Output: 1 Stereo RCA Output