Electronic Parameter -Working temperature: -10℃----40℃ -Working humidity: 40%----90% -Input voltage: AC110-230V±10%/50-60Hz -Output voltage: 780MV ±10MV -Frequency response: 5Hz 22.5KHz ≤±5dB 10KHZ ±1dB 20KHZ ±1dB -Harmonic wave distortion: ≤0.1% ≤0.05% (A weight) -Signal-to-Noise: ≥70dB ≥90dB (A weight) -R/L separation: ≥65dB ±5dB -R/L Balance: ≤1dB -Voltage with-stand: AC 3.5KV/50/60S 5mA -Insulation resistance: DC500V >100MΩ 60S Reference information: - Unit size: (W)430*(D)285*(H)70mm - Packing size: (W)506*(D)130*(H)398mm - Accessories (option): Stereo RCA cable, Remoter (batteries), manual.. - Container Q.T.Y.: