Audio Space REFERENCE 3.1, Integrated Stereo Amplifier - Phono MM (Tube)

Product Description Stereo Integrated Amplifier (with MM Phono) Model No. : Reference 3.1 (300B) Input Impedance : >56k ohm (RCA/Direct In) / 47 ohm (MM Phono In) Output Impedance : 0, 4, 8, 16 ohm Output Power : 21W x 2 (Triode-Class A Push-Pull) Damping Factor : >5 Frequency Response : 20Hz~30kHz±1dB T.H.D. : <1% 20Hz~20kHz (Ref. Output) Input Sensitivity : >200mV, 3~5mV (MM Phono In) S/N Ratio : >80dB (Hum Noise<3mV) Vacuum Tubes : 300B x 4, 6N8P x 2, 12AX7 x 4 Dimension : 475 x 405 x 215 mm (DxWxH) Weight : 28.7 kg (N.W.), 34.6 kg (G.W.)