Maximum output power: 50W*2 (8 ohms, ultra linear, 1KHz, THD=5%) 25W*2 (8 ohms, tri-pole, 1KHz, THD=5%) Total harmonic distortion: ≤1% (at 35W output, 1KHz) Signal-to-noise ratio: ≥91dB (A-weighted) Input sensitivity: ≤300mV Frequency response: 10Hz~75KHz (-2dB) Load impedance: 4Ω or 8Ω Maximum power consumption: 300W Electronic tube: KT-88*4, USSR 6H8C*2, ECC83/12AX7*1 Gross weight approx.: 27.5kg Net weight approx.: 24kg Dimensions: W400mm H219mm D363mm