Cadence QR Series 5Channel Amplifier Class D Specifications RMS Power @2 Ohm-14.4V: 125W x 4 RMS Power @4 Ohm-14.4V: 80W x 4 Bridged RMS Power @4 Ohm-14.4V: – Subwoofer Channel @2 Ohm-14.4V: 400W x 1 Fuse Rating: Ext. 80A x 1 Dimensions : 35,4 x 16 x 5,2 cm Unit Weight: 2.8 Kg