| {  "Noise" : {  "Main Mix Noise" : {  "Main Mix Fader at Unity, Channel Faders Down" : "-87 dBu (-91 dB signal to noise ratio, ref +4 dBu) ",  "Main Mix Fader at Unity, Channel Faders at Unity" : "-81.5 dBu",  "(20 Hz to 20 kHz bandwidth, 1/4" main out, channel gains at unity, channel EQs flat, all channels assigned to main mix, odd channels panned left, even channels panned right)" : ""  }  },  "Total Harmonic Distortion (THD)" : {  "Microphone In to Insert Send" : "<0.001%",  "Microphone In to Main Out" : "<0.005%",  "(1 kHz at 15 dB gain, 20 Hz to 20 kHz bandwidth)" : ""  },  "Crosstalk / Attenuation" : {  "Channel Mute Switch Engaged" : "-90 dBu",  "Channel Fader Down" : "-88 dBu",  "(1 kHz relative to +10 dBu, 20 Hz to 20 kHz bandwidth, microphone in, 1/4" main out, gain at unity)" : ""  },  "Frequency Response" : [  "Microphone input to main output (gain at unity) ",  "+0, -1 dB, 20 Hz to 50 kHz",  "+0, -3 dB, <10 Hz to >100 kHz"  ],  "Equivalent Input Noise" : {  "150 Ω Termination" : "-128.5 dBu, 20 Hz to 20 kHz",  "Microphone input to insert send out, maximum gain" : ""  },  "Common Mode Rejection Ratio" : "Better than -70 dB at 1 kHz",  "Maximum Level" : {  "Microphone In" : "+21 dBu",  "All Other Inputs" : "+21 dBu",  "Main Mix XLR Out" : "+27 dBu",  "All Other Outputs" : "+21 dBu"  },  "Impedance" : {  "Microphone In" : "2.7 kΩ",  "Channel Insert Return" : "2.5 kΩ",  "All Other Inputs" : "10 kΩ or greater",  "Tape Out" : "<10 Ω",  "All Other Outputs" : "120 Ω"  },  "Equalizer" : {  "3-Band EQ (Mono Channels)" : {  "High Shelving" : "±15 dB at 12 kHz",  "Mid Peaking" : "±15 dB sweep 100 Hz to 8 kHz",  "Low Shelving" : "±15 dB at 80 Hz",  "Low Cut Filter" : "18 dB/octave, -3 dB at 100 Hz"  },  "4-Band EQ (Stereo Channels)" : {  "High Shelving" : "±15 dB at 12 kHz",  "Hi Mid Peaking" : "±15 dB at 2.5 kHz",  "Low Mid Peaking" : "±15 dB at 400 Hz",  "Low Shelving" : "±15 dB at 80 Hz"  }  },  "USB" : {  "Format" : "USB 1.1",  "I / O" : "Stereo Input, 4-Channel Output",  "A / D / A" : "24 bit, 44.1 kHz / 48 kHz"  },  "Power Consumption" : "55 W, 100 to 120 VAC, 50 to 60 Hz",  "Operating Temperature" : "32 to 104°F (0 to 40°C)",  "Dimensions" : {  "Height" : {  "Front" : "1.8" (46.3 mm) ",  "Rear" : "6" (153 mm) "  },  "W x D" : "29.4 x19.1" (748.0 x 486.0 mm)"  },  "Weight" : "31.0 lb (14.1 kg)"  } |