Rocktron Mainline 300W Guitar Power Amplifier Output Power (Unbridged): 150 watts per channel @ 4 ohms (both channel driven), 75 watts per channel @ 8 ohms (both channels driven), 37.5 watts per channel @ 16ohms (both channels driven) Output Power (Bridged): 300 watts @ 8 ohms, 170 watts @ 16 ohms Input Sensitivity: - 7.3dBu (0.335V RMS), 4W stereo for rated output at max. gain Input Impedance: 470K Maximum Input Level: 23dBu (10.95V RMS), input stage clip point