Stereo Tube Preamplifier Output 2V (18V Max.) Frequency response 10Hz~200kHz±0.5dB T.H.D. <0.02%(20Hz~20kHz/2V output) S/N ratio >96dB Channel Balance <1dB Channel Separation >62dB Input Impedance 250kΩ(RCA) Output Impedance <2.5K Ω Input sensitivity 50mV~100mV Vacuum Tubes 12AU7 (ECC-82/6189) ×2 12AX7 (ECC-83/5751) ×2 Weight 6 kg … Continued