Frequency response: 20Hz-20KHz; ±0.5dB Total harmonic distortion and noise: -30dBu input to mix, mic gain 30dB, <0.007% Microphone input equivalent input noise: MIC EIN@Max gain, 150 ohms source impedance -128dBu Bus noise: Noise (20Hz-20KHz measurement bandwidth) Mixing: mix@max ,faders down<?85dBu Crosstalk between channels: Channel mute: >96dB Fader position: >96dB Auxiliary sending port: >86dB Input and output impedance: Microphone input: 2.4K? Line input: 100K? Stereo input: 100K? Output: 75? Input and output levels: Maximum microphone input: +17dBu Maximum line input: +30dBu Stereo maximum input: +30dBu Maximum mixing output: +20dBu Headphone maximum output: 300mw/200? EQ (mono): HF (high frequency): 12KHz, ±15dB MF (intermediate frequency): 2.5KHz, ±15dB LF (low frequency): 80Hz, ±15dB Working conditions: Temperature range: -10??+30? Relative humidity: 0%?80% Power supply: AC110-220V; 50/60Hz Power consumption: <30W Dimensions: 440W×415D×85H Total amount: 3.7