Cadence QRS Series 2 Channel Class G/H Full Range Amplifier QRS2.300GH Specifications: Channel/Class: 2 G/H RMS Power@2 ohm-14.4V: 450Wx2 RMS Power@4ohm-14.4V: 300W x2 BridgeRMS Power@4 ohm-14.4V: 900W x 1 Minimum THD: 0.05% S/N Ratio: >86 dB Fuse Rating: 35A x 3 Dimensions (Lx W x H): 16.93″x 7.56″x2.32″