Cadence QRS Series 2 Channel Class G/H Full Range Amplifier QRS2.180GHSpecificationsChannel/Class: 2 G/HRMS Power@2 ohm-14.4V: 300Wx2RMS Power@4ohm-14.4V: 180W x2BridgeRMS Power@4 ohm-14.4V: 600W x 1Minimum THD: 0.05%S/N Ratio: >86 dBFuse Rating: 35A x 3Dimensions (Lx W x H): 13.78″x 7.56″x2.32″