CONTROL FUNCTIONS: Volume, Select, Power On/Off HARMONIC DISTORTION (for 2V RMS at output): 0.08%(70Hz/7kHz 4:1) FREQUENCY RESPONSE: (-1dB points at 2 V out put) 3Hz-100kHz INPUT IMPEDANCE: 50k ohms INPUT INTERFACES: 4 groups (RCA) OUTPUT INTERFACES: 2 groups (RCA) SIGNAL/NOISE: 90dB GAIN at 1 kHz: 24dB CONSUMPTION: 20watt NEGATIVE FEEDBACK: None VACUUM TUBE: 6922 x2 DIMENSIONS: 430(L) x 120(W) x 80(H) mm WEIGHT: 6 kg