Pre-Owned Lexicon MPX-100 Dual Channel Processor


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MPX-100 Rack Mounted Effects Processor

The MPX 100 is a true stereo dual-channel procesor with 24-bit internal processing, 20-bit A/DD/A and S/PDIF digital output. Powered by a new version of Lexicon’s proprietary Lexichip,™ the MPX 100 has 240 presets with classic, true stereo reverb programs such as Ambience, Plate, Chamber and Inverse, as well as Tremolo, Rotary, Chorus, Flange, Pitch, Detune, 5.7 second Delay and Echo. Dualchannel processing gives you completely independent effects on the left and right channels. A front panel Adjust knob allows instant manipulation of each effect’s critical parameters and an Effects/ Balance knob lets you control effect level or the balance of dual effect combinations. An easy Learn mode allows MIDI patching of front panel controls. In addition, tempo-controlled delays lock to Tap or MIDI clock, and Tap tempos can be controlled by audio input, the front panel Tap button, dual footswitch, external MIDI controller or MIDI Program Change. Other features include dual 2-stage headroom indicators, a headphone output, a software-selectable MIDI OUT/THRU port, pushbutton or footswitch selection of dry or muted audio output and a 20Hz-20kHz ±1dB Frequency Response.


This processor works as described and is in good condition, showing some lighter external wear and aging as can be seen in photos. 


  • Audio Inputs (2)
  • Level -20dBu
  • Impedance 500K unbalanced for
  • Direct Instrument input
  • (Unit detects mono input
  • on the right input)
  • 1/4" connectors
  • Analog Audio Outputs (2)
  • Level +8dBu typical
  • Impedance 75Ω: headphone output
  • (Left only used for mono
  • output; Right only used
  • for stereo headphones)
  • 1/4" connectors
  • Digital Audio Output
  • Digital S/PDIF output (always active)
  • Sample Rate 44.1kHz
  • ConnectorCoaxial, RCA type
  • Footswitch
  • Tip/Ring/Sleeve phone jack for
  • Bypass and Tap (optional)
  • Frequency Response
  • Wet/Dry 20Hz-20kHz, ±1dB
  • THD+N
  • <0.05%, 20Hz-20kHz
  • Dynamic Range
  • A-A >95dB typical, 20Hz-20kHz,
  • unweighted
  • A-D >100dB typical, 20Hz-20kHz,
  • unweighted
  • Conversion
  • 20 bits A/D, 20 bits D/A
  • 44.1kHz sample rate
  • Crosstalk
  • >45dB
  • Power Requirements
  • 9VAC, 1A wall transformer provided
  • Dimensions
  • 19"Wx 1.75"H x 4"D
  • (483x45x102mm)
  • Weight
  • Unit: 2 lbs, 2 oz (0.959 kg)
  • Environment
  • Operating
  • Temperature 32° to 104°F (0° to 40°C)
  • Storage -30° to 75°C
  • Relative
  • Humidity 95% non-condensing

Type: Effects