320D Stereo Compellor

List: $1,699.00




320D Stereo Compellor


The patented technologies within the 320D are totally unique. By going beyond conventional design ideas, the 320D provides audio processing with unprecedented sound transparency, yet is exceedingly effective at controlling levels. The 320D has algorithms like the “FDL”, “DVG” and “DRC”.




  • Broadcast pre-processing
  • MP3 encoding and playback
  • Recording
  • Installed and mobile sound
  • DAW input
  • Mastering
  • Satellite uplinks
  • Background music
  • Ham radio
  • Tape duplication
  • Cable TV



  • Delivers transparent audio level control for broadcast, recording and live sound
  • Balanced analog input and output
  • AES digital input and output
  • Dual mono or stereo operation


The 320D's Frequency Discriminate Leveler section, with the Dynamic Verification Gate and the Silence Gate, slowly adjusts the volume level of an audio stream with very complex algorithms that hide its work. It works differently at different frequencies and stops processing when the sound stops, then resumes instantly when the sound reappears, so there's no distracting increases in program background noise. When you listen, you know the levels are made more even, but you don't perceive the levels are shifting.

The 320D's Variable Slope Compressor, Dynamic Recovery Computer and Dynamic Verification Gate add adaptable compression to match the texture of changing audio sources. You don't hear pumping or other audio artifacts, just natural sound that is evenly consistent in loudness.

The 320D's limiter acts on peaks that shoot beyond average program levels so they are easy to handle by any analog or digital recording system.

The 320D can act as two independent mono processors or one linked stereo processor, which is selectable on the front panel. This is true with both analog and digital I/O.

When the analog input is used, the digital output contains the 320D's processing. When the digital input is used, the analog output contains the 320D's processing, properly leveled.




  • Frequency Response: 10Hz - 38 kHz(± 0.5dB)
  • Dynamic Range: 120 dB
  • Hum and Noise: (unweighted 22Hz-22kHz) -93 dBu
  • Crosstalk: (10 Hz - 22kHz) -79 dB
  • THD: (10 Hz - 22kHz at max. output) .0003%
  • IMD: (10 Hz - 22kHz at max. output) .0007%


IF LEVEL SET TO +4 dBuIF LEVEL SET TO -10dBv (-7.8dBu)
ConnectorXLR-3F and 1/4" TRS Phone Jackssame
TypeTransformerless, active balancedsame
Balanced40k ohmssame
Unbalanced20k ohmssame
Maximum Level+27 dBu+12.5 dBV (+14.8 dBu)
CMRR>40 dBsame


  • Connector: XLR-3M and 1/4" TRS Phone Jacks
  • Type: Active balanced(may be used unbalanced)
  • Balanced: 112 ohms
  • Unbalanced: 56 ohms
  • Maximum Level: +27dBu Unloaded; +25 into 600 ohms

Other Specifications

  • Power requirements: 90-250 VAC 50-60 Hz 12W
  • Dimensions: 19"W x 1.75"H x 8.25" D 1 Rack U(482.6mm x 44.5mm x 209.6mm)
  • Net Weight: 6 lbs(2.73 kg)
  • Shipping Weight: 9 lbs(4.1 kg)