Digital Stereo Mixer, 1RU


Our Price: $1,593.13
List Price: $1,971.49
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With just the touch of a button, the M-633D automatically eliminates unpleasant reverberation and feedback to deliver clear, highly articulate sound. This new-concept digital stereo mixer is next-generation unique. It provides automatic audio adjustment with push-button ease. You don't have to be a sound technician to operate the M-633D, and there's no need for complex PC settings. It features Automatic Resonance Control Function, which suppresses feedback, and an automatic Clipguard function add enhanced sound intelligibility.


  • Automatic Resonance Control - An advanced measurement and processing algorithm improves speech intelligibility and sound quality in facilities with acoustically challenging environments. This function also automatically indentifies room mode frequencies and applies an inverse response curve to compensate for the measured room response.
  • Feedback Suppressor - The M-633D automatically suppresses sudden feedback that can occur when the person holding the microphone moves around.
  • Automatic Clipguard - When the input sensitivity is set to either the MIC or PHANTOM position, the sensitivity is automatically switched to the line level in the presence of excessive input levels, thus preventing sound distortion.



  • 6 monaural input channels, switchable LINE, MIC or PHANTOM: LINE = -10dB, 2.4k ohms // MIC = -46dB, 2.4k ohms // PHANTOM = -46dB, 2.4k ohm, +24VDC, electronically balanced // removeable terminal block (3 pins), phone jack
  • 3 stereo inputs (L,R): -10dB / 10k ohms, RCA jack, stereo mini jack


  • 2 monaural outputs (0dB, electronically balanced, removable terminal block (3pins))
  • 1 stereo output (0dB, electronically balanced, removable terminal block (3pins))
  • 1 stereo recording outout (-10dB, RCA jack)

Signal Processing

  • Automatic Resonance Control (ARC)
  • Feedback Suppressor (FBS)
  • Automatic Clipguard (ACG)
  • Automatic Mute


  • Bus Line: Monaural channel x 2, stereo channel x 1
  • Frequency Response: 20Hz - 20kHz
  • Sampling Frequency: 48kHz / 24 bits
  • Dynamic Range: 90dB or more (IHF-A weighted)



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