MODEL R-2004 
HUM AND NOISE -127dB Equivalent Input Noise
(Average,Rs=150) -95dB Residual Noise (MIX L / R,ALT 3~4,AUX SEND 1~2,CTRL ROOM)
Master Fader at Nominal level and all Channel Assign Switch OFF
Dimensions (HxWxD)   
mm  80.3x416x431 mm
Weight   
kg  7.3kg
lbs  16.1 lbs
MAXIMUM OUTPUT LEVEL  +22dB(MIX L / R,ALT 3~4) @600 ohm
(0.5% T.H.D at 1kHz) +22dB(AUX SEND1~2) @600 ohm
+22dB(INSERT) @40k ohm
+22dB(CTRL ROOM) @600 ohm
Over 100mW (Headphone) @40 ohm
MASTER EQ  Turnover / rollover frequency:located 3dB below the point of maximum amplification and attenuation
HI EQ  (+ / -15dB) 12kHz Shelving
MID EQ  (+ / -15dB) 100Hz~8kHz (EQ for Frequency Variable) Peaking 
LOW EQ  (+ / - 15dB) 80Hz Shelving
POWER CONSUMPTION  AC 100V / 120V / 230V / 240V ,50~60Hz
MAXIMUM LEVELS   
Mic in +4dBu
Tape in +13dBu
All other inputs +25dBu
MAXIMUM VOLTAGE GAIN 72dB MIC IN TO MIX L / R,ALT 3~4
72dB MIC IN TO AUX 1
72dB MIC IN TO AUX 2(POST),EFX
74dB MIC IN TO CONTROL ROOM L / R
72dB MIC IN TO REC L / R
54dB LINE IN TO MIX L / R,ALT 3~4
58dB LINE IN TO AUX 1
58dB LINE IN TO AUX 2(POST)
60dB LINE IN TO CONTRAL ROOM L / R
22dB ST IN TO MIX L / R,ALT 3~4
20dB AUX RETURN L / R IN TO MIX L / R
16dB TAPE IN TO MIX L / R
INTERFERENCE (CROSSTALK) at 1kHz  
Main Fader Down -85dBu
Channel Alt / Mute Switch Engaged -80dBu
Channel Fader Down -70dBu
MONO INPUT CHANNEL GAIN 50dB variable (-60dB~-10dB), (-40dB~+10dB)
PEAK INDICATOR Input Channel:Turns on 3dB Under Pre-fader Signal Clip
LEVEL METERS 10-Segment LED x2 (Output of +4dB at 0dB) Main L / R
PHANTOM POWER 48VDC