JBL GTX500 750 watt Subwoofer Amplifier RMS: 350W x 1 @ 4 ohms, 500W x 1 @ 2 ohms Total Peak Power: 770W Bare wire-to-RCA adapters included Signal sensing turn-on Signal to Noise Ratio: &gt; 80 dB Frequency Response: 20 - 200 Hz (+/-0.5 dB); 10 - 300 Hz (+/-3dB)