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SPeCIfICATIoNS
Analog Audio Inputs
Connectors  four ¼" TRS balanced or unbalanced
Impedance  50k Ohms bal., 25k Ohms unbal.
Input Level  +4 dBu nominal, +24 dBu maximum
A/D Conversion  24-bit, 48kHz or 44.1kHz, 128 x oversampling
Analog Audio Outputs
Connectors  four ¼" TRS balanced or unbalanced
Impedance  2k Ohms bal., 1k Ohms unbal.
Output Level  +4 dBu or –10 dBV nominal (software adjustable), 24 dBu maximum
D/A Conversion  24-bit, 48kHz or 44.1kHz, 128 x oversampling
Analog Audio Performance (Effects Bypassed)
Frequency Response  10 Hz – 20kHz  +0 dB/–0.5 dB 
THD+N  <0.0019%  10Hz – 20kHz
Dynamic Range  >109 dB (A-weighted) A/A
Crosstalk  typical <–80 dB 20Hz – 20kHz
Digital Input and Output
Connectors  Dual RCA phono (S/PDIF); XLR balanced (MX400XL version)
Format  S/PDIF 24-bit
Sample Rate  44.1  or  48kHz
Processing Delay  3.7 ms @ 48 kHz
Frequency Response  10Hz to 22kHz ±0.5 dB @ 48kHz
Control Interface
USB    USB 1.0 for MX-EDIT™ Editor/Librarian and VST™ (Windows® only)/Audio Units  
    plug-ins
MIDI  In/Out 5-pin DIN
Foot Pedal  ¼" TRS phone jack
General
Power  117 VAC or 230 VAC, 18 Watts
Size (W/H/D)  19" x 1.75" x 7.25"*/6.375" 
    (483 x 44 x /185mm*/162 mm)
Weight  5.8 lbs (2.6 kg)
* Including knobs.
MX400