DUB DUBa4100 Four Channel Amplifier with Max 200 Watt Output, Brushed Finish (Black) Output power: Stereo 4x75 Watts at 4-Ohm/ 4x100 Watts at 2-Ohm Bridged 2x200 Watts at 4-Ohm Frequency response: 10Hz-60kHz, -3dB THD+N @ 1kHz, 1 Watt: 0.02%, 4-Ohm, 14.4V DC Two 20 Amp ATO fuse