The ease of plug-in control merges with Lexicon hardware processing power.

The Lexicon MX400 is a single-rackspace, 4-in/4-out unit combining an intuitive front-panel design with Lexicon's "Hardware Plug-In" technology, a unique USB connection, and a VST/AudioUnits interface for use with software recording platforms.

Studio pros will be glad to know that the units also feature a wide array of the rich, complex reverb algorithms, delays, effects and dbx dynamic effects that have made Lexicon a favorite for recording.

The USB Hardware Plug-In format gives you complete plug-in control over your MX400 within any VST or AudioUnits software environment, enabling you to control all automation and recall parameters exactly as you would with a software plug-in while enjoying the sonic benefits Lexicon firmware provides.

Equally at home for live applications, the MX400 supplies the FOH/live sound engineer intuitive front panel control with a backlit LCD screen for parameter displays. 4 in, 4 out 1/4" TRS balanced I/O. Also offers 4-channel surround algorithms.

  • 17 legendary Lexicon reverbs
  • Lexicon delays & modulation effects
  • dbx compression and de-essing
  • Quad-processor design
  • 7 effect routing options
  • 99 Factory/99 user programs for Stereo mode
  • 99 Factory/99 user programs for Dual-Stereo mode
  • 25 Factory/25 user surround programs
  • USB "Hardware Plug-In" feature with
  • VST and Audio Units plug-in software
  • MX-Edit Editor/Librarian software
  • Dual S/PDIF Digital Input/Output
  • 24 bit, 48kHz/44.1kHz sample rates
  • Large front panel LCD display
  • MIDI IN and THRU
  • 1/4" balanced/unbalanced TRS I/O
  • Analog Audio Inputs connectors: 4 - 1/4" TRS balanced or unbalanced
  • Impedance: 50k Ohms bal., 25k Ohms unbal.
  • Input Level: +4 dBu nominal, +24 dBu maxium 48kHz or 44.1kHz
  • A/D Conversion: 24-bit, 48kHz 128 x oversampling
  • Analog Audio Outputs
  • Frequency Response: 10Hz - 20kHz +0 dB/-0.5 dB
  • THD+N: Dynamic Range: 109dB (A-weighted) A/A
  • Crosstalk: Typical Digital input and output: Dual RCA phono format S/PDIF 24-bit
  • Sample rate: 44.1 or 48kHz
  • Frequency Response
  • 10Hz-22kHz ±0.5 dB @ 48kHz
  • USB 1.0 for MX-EDITª Editor/Librarian and VSTª/Audio Units plug-ins
  • MIDI
  • Footswitch jack (footswitch sold separately)
  • In/Out 5-pin DIN
  • 1/4" phone jack
  • Power: 117 VAC or 230 VAC, 18 Watts
  • Size (W/H/D)
  • 19" x 1.75" x 7.25"
  • Weight: 5.8 lbs.
  • MPN : MX400
  • UPC : 691991500220

Audio MIDI Plus is committed to deliver the best experience for our customers. If for some reason you are not satisfied with your purchase, you may return it for a refund of the purchase price, an exchange or a store credit within 30 days from the ship date. 

In the unlikely event that you received a defective product, a wrong product, or damaged product, Audio MIDI Plus will replace it at no charge of any additional shipping cost. We will send you a prepaid label to return the item, and ship you a replacement. You will not incur any shipping charges. Please notify us of any of damaged, defective or misshipped products within 14 days.

After 30 days, you may request manufacturer warranty if your item malfunctions. Unless otherwise specified, Audio MIDI Plus is an authorized dealer for all the brands we represent.

How to request a return:
Please email us or call us to obtain a RMA number. All returns must be in a re-sellable condition and include all packing materials, accessories and paperwork. We may apply a restocking fee if the returned products fall into these following categories:

  • Missing original packaging, manuals, accessories, or any contents that was included
  • RMA number was not associated with the return
  • Items not in original like new condition

Please send all returns to:
Audio MIDI Plus Returns
3725 Saddle Drive,
Carlsbad, CA 92010

The following items are not returnable, unless received DOA, in which we will send a replacement:

  • Software
  • Electronic Delivery of Software
  • Special orders
  • DVD’s

Items that fall into the in mouth and in ear use category, such as mouthpieces, earphones, ear plugs, harmonicas, cannot be returned due to health regulations

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International Friends: If you refuse a delivery due to Tax and/or Duty, we reserve the right to refund you only when the package is successfully returned back to us, and MINUS all shipping charges

Most software items are now Electronic Delivery Only. Once payment is received, we will Email you the necessary codes and/or download links. Please be sure to check your junk mail and spam folders for this Email.

While most items are in stock either in our retail store or fulfillment warehouse in Carlsbad, CA, in some cases items may need to be ordered and/or drop shipped from the manufacturer. Please allow 3-10 days for order processing, fulfillment, and setup, as well as transit and delivery time. Tracking will be available within 48 hours in most cases.

Please call us at (844) 577-4502 10AM-6PM PT M-S for an IN-HAND description of the item that you are interested in. We are always happy to help, and look forward to speaking with you if needed. Live Skype may also be available for you.

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