Lexicon MX400 Dual Stereo / Surround Rack Mount Reverb & FX Processor
Lexicon MX400 Dual Stereo / Surround Rack Mount Reverb & FX Processor
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For sale: Lexicon MX400 Dual Stereo / Surround, Reverb, Delay, & Modulation FX Processor. This is quite a powerful 1u rack mount effects processor from the 2010s. It has some unique features from the era, including a VST/AU (32-bit only) app and a standalone MX Edit app that can control the unit via USB. Since the unit has midi and USB, you can use the standalone app via USB and use standard midi to automate parameters in your DAW. If your DAW still supports 32 bit plugins, you can just use the VST.
Depending on configuration / how many effects you're using, it also has some very nice EQ/ducking features on some of the reverbs and delays. If you're using all 4 FX channels, you can't get to these features (bummer, but that's how it's setup). If you're using 2 FX channels (1 FX per stereo pair, which is how we used it in the studio), you then get access to the unique EQ/ducking parameters, which are ideal for getting a good, modern, clean sound.
Sale includes unit, power cord, and USB cord. Overall condition is nice and clean, though the black chassis is not without imperfections. It works flawlessly and has been well taken care of.
Questions? Start a live chat or email us anytime.
All sales final except for damage or loss. A signature is required for delivery; if unsigned and returned, refunds incur a 15% restocking fee (excluding our initial shipping cost) or you pay to reship with insurance. Please keep packing materials for 15 days, or until any claims resolve. See our Refund Policy and Shipping Policy for full details.
Shipping issues are rare. Rest assured, we take great care to ensure your items arrive as described.
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- Processor Type: Dual stereo or stereo/surround reverb and effects processor
- Analog I/O:
- 2 × XLR inputs (balanced)
- 2 × 1/4" TRS inputs (balanced/unbalanced)
- 2 × XLR outputs (balanced)
- 2 × 1/4" TRS outputs (balanced/unbalanced)
- Digital I/O:
- S/PDIF digital input and output (24-bit, 44.1/48kHz)
- USB 1.1 for software integration and preset recall
- Connectivity: USB (for software control only, not audio), MIDI In/Out/Thru, footswitch input
- Effects:
- Reverbs: Hall, Plate, Room, Chamber, Gated, Reverse
- Delays: Mono, Stereo, Tap, Multitap
- Modulation: Chorus, Flanger, Phaser, Tremolo, Vibrato
- Pitch shift, Compressor, De-Esser, EQ, and more
- Routing Modes: Mono In/Out, Stereo In/Out, Dual Mono, Dual Stereo, Stereo Split, or 5.1 Surround
- Presets: 240 factory presets and 25 user locations (per processor)
- Software Integration: VST/AU control plug-in for full parameter editing and automation within a DAW
- Display: Backlit LCD with real-time metering and editing interface
- Form Factor: 1U rackmount
- Dimensions: 19.0 × 1.75 × 7.25 inches (48.3 × 4.4 × 18.4 cm)
- Weight: 5.3 lbs (2.4 kg)
- Use Cases:
- Studio mixing and mastering
- Live front-of-house processing
- Vocal and instrument effects
- DAW integration with VST/AU control















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