Item #: LEX MX300 LIST

Lexicon MX300 Dual Processor Stereo Reverb

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Product Highlights

Product Description

The Lexicon MX300 is a 2-in, 2-out processor that combines an intuitive front-panel design with Lexicon's "Hardware Plug-In" technology, a unique USB connection and VST/AU interface for use with software recording platforms.

    From studio to stage, the Lexicon MX300 delivers richer, more sophisticated reverb to bring out the unique character & complexity of vocals, drums and guitar in your mix!
The MX300 features a wide array of rich, complex reverb algorithms, delays, effects and dbx Professional Products dynamics that make it an ideal package equally suited for the home studio or live use. In any application, the MX300 provides a versatile sonic signature that is unmistakably Lexicon.

The MX300 has removed the compromises associated with using hardware in the home studio environment. The USB Hardware Plug-In format allows users to have complete plug-in control over their MX300 within any VST or Audio Units software environment, enabling users to control all automation and recall parameters exactly as they would with any software plug-in.

Equally at home for live applications, the MX300 supplies the FOH/live sound engineer an intuitive front panel control with a backlit LCD screen for parameter displays. A 2-in, 2-out design, the MX300 series offer unprecedented connectivity through both XLR and TRS balanced connectors as well as digital S/PDIF.

Choose from five effects routing options
The MX300 lets you switch effect routings easily via front panel controls, so you don’t have to spend time behind your rack changing cables. Dual Mono sends the Left and Right input signals through Effect 1 and Effect 2 respectively. Each signal is then routed to its respective output, completely independent from the other. Cascade (Series) sends Left and Right input signals first through Effect 1, then through Effect 2, and then routed as a stereo signal to their respective outputs. Dual Stereo (Parallel) routes Left and Right input signals through both effects independently. Both Effects’ output signals are then mixed together, and routed to both the outputs as a single stereo signal.

Mono Split sends Left input signal through Effect 1, while the Right input signal is sent through Effect 2. The output signals of both Effects are then mixed together, and routed to both the outputs as a single stereo signal. Stereo routing provides a single stereo effect path for Left and Right signals. This routing removes one of the effect modules for users requiring a streamlined signal path with only a single effect for their needs — but taking advantage of all of the MX300’s processing horsepower.

MX300 Features
  • 2-in / 2-out configuration
  • 16 legendary Lexicon reverbs
  • Lexicon delays & modulation effects
  • dbx compression and de-essing
  • Input Gain Control for stereo inputs
  • Intuitive Navigation/Edition with large LCD screen, Page/Select Wheel, 3 top-level parameter controls plusExit, Tempo and Bypass selectors
  • 5 effect routing options
  • 99 Factory / 99 User programs
  • USB Hardware Plug-In feature withVST and Audio Units plug-in software
  • MX-Edit Editor/Librarian software
  • S/PDIF Digital Input/Output
  • 24-bit, 48kHz/44.1kHz sample rates
  • 1/4 inch footswitch jack
  • MIDI IN and THRU
  • XLR and 1/4 inch TRS balanced I/O

  • Small Hall
  • Large Hall
  • Small Plate
  • Large Plate
  • Room
  • Chamber
  • Gated
  • Reverse
  • Vocal Hall
  • Vocal Plate
  • Drum Hall
  • Drum Plate
  • Ambience
  • Studio
  • Arena
  • Spring
  • Studio Delay
  • Mono Delay
  • Tape Delay
  • Pong Delay
  • Mod Delay
  • Reverse Delay
  • 2-Tap Delay
dbx Dynamics
  • Compressor
  • De-Esser
Modulated Effects
  • Chorus
  • Flanger
  • Phaser
  • Tremolo / Pan
  • Rotary
  • Vibrato
  • Pitch Shift
  • Detune
All MX300 reverbs, delays, dynamics and effects parameters can be accessed and edited from the included PC VST and Macintosh Audio Units plug-ins.

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Helpful Info about the Manufacturer
Phone:  801-568-7567 Warranty:  1 Year

Product Specifications

Lexicon MX300 Dual Processor Stereo Reverb Specifications

    Analog Audio Inputs
  • Connectors Two 1/4 inch balanced TRS, Two XLR female
  • Impedance 50k Ohms bal., 25k Ohms unbal.
  • Input Level +4 dBu nominal, +24 dBu maximum 48kHz or 44.1kHz
    Analog Audio Outputs
  • Connectors Twp 1/4 inch balanced TRS, Two XLR male
  • Impedance 2k Ohms bal., 1k Ohms unbal. 1/4 inch only
  • Output Level +4 dBu or –10 dBV nominal (software adjustable), 24 dBu maximum 48kHz or 44.1kHz
  • D/A Conversion 24-bit, 44.1/48kHz 128x oversampling
    Analog Audio Performance
  • Frequency Response 10 Hz – 20kHz +0 dB/–0.5 dB
  • THD+N <0.0019% 10Hz – 20kHz
  • Dynamic Range >109 dB (A-weighted) A/A
  • Crosstalk typical <–80 dB 20Hz – 20kHz
    Digital Input and Output
  • Connectors Dual RCA phono (S/PDIF)
  • Format S/PDIF 24-bit
  • Sample Rate 44.1kHz or 48kHz
  • Processing Delay 3.7 ms @ 48 kHz
  • Frequency Response 10Hz to 22kHz ±0.5 dB @ 48kHz
    Control Interface
  • MIDI In/Thru 5-pin DIN
  • Footswitch 1/4 inch phone jack
  • Power 100–120 VAC 50/60Hz, 18 Watts, 220–240 VAC 50/60Hz, 18 Watts
  • Size (W/H/D) 19 inches x 1.75 inches x 7.25 inches*/6.375 inches(483 x 44 x /185mm*/162 mm) *including knobs.
  • Weight 5.8 lbs (2.63kg)

Customer Reviews

Review: Majestic Lead Vocals Submitted: 1/29/2019

Product Rating5 out of 5 stars.



Amazing!! Love it!!
Product Rating

Product Review

Works perfect for me!! Makes my job as lead vocalist much easier!!

Review: BrewHaus223 Submitted: 8/19/2014

Product Rating5 out of 5 stars.



Nice Upgrade for My System

Your general opinion of this product.

I really like it a lot so far. For the most part its easy to use. It sounds awesome. And they make a good effort to have the hardware unit act like a plugin.

It seems like it's of great quality. It feels rugged. The knobs feel professional and are easy to work with.

Pretty much 90% of this unit is really easy to use. The only thing that's a little tricky is the wet/dry mixing. I'm used to a wet/dry knob on the front. This one doesn't have one. It's one of the many menu options. It's not so bad now that I've had some time to get used to it. However that's the only menu complaint I have. The rest of the menu options and layout are great.

The two things I like most about this unit are the dual effects capabilities, and the VST emulation. The dual effects can be arranged in a lot of different ways which I really like. The VST interface is nice. You need a USB cable to control it, and preferably SPDIF cables to do the processing, but you can use analog if you have to.

Incredible. I was running through some presets as I was loop-playing a vocal section through my DAW. I was watching my DAW screen as I blindly turned the knob through the different presets. I came across one preset, and I actually turned my head to see what it was it sounded so good (for that particular song of course).

So far so good. It's still a new unit in my rack. I like that it came with its own screws and plastic washers.

Review: Bryan Thompson Submitted: 3/8/2014

Product Rating5 out of 5 stars.



Awesome Lexicon box

Your general opinion of this product.

Unit is very sturdy. easy to use out of the box. i find the dry wet signal is easier to control through the software than through the box itself. just takes more button pushes on the unit

Seems Durable. Not sure about it's use for gigging, i use in a studio environment.

Starting using it right away. its an effects processor. can;t tell you yet how well it plays with my DAW as i have not yet hooked it up that way. Currently staged through my Pre, than compressor, than Lexicon into mixing board. SO far it does what it is supposed to.

The quality sounds. very rich. the best feature if it works correctly should be the ability to use it as a plug instance inside my DAW. looking forward to high quality reverbs on my Master signal.

You get out of it what you put in. Pretty EQable so depends on the user.

Just received a week ago.

Review: Mixman from Bremerton, WA, USA Submitted: 2/8/2012

Product Rating5 out of 5 stars.


Passed the test

Appears solid, pots feel smooth. Readout is clear. Terminals snap tight.

Two reverbs for one-ability to split the outputs/inputs to individual mono channels.

One of my tests is to plug in, cable up and go, no reading the manual. This product passed, no need to read the book!

Compared to a Roland SRV3030, and Alesis verbs the MX300 is much smoother, warmer and in this versatile.


Your general opinion of this product.

Perfect balance of ease of use with quality of sound. This is a no-brainer buy, do-it.

Review: RetroRobert from Ottawa, Canada Submitted: 2/5/2008

Product Rating4 out of 5 stars.


Don't Have to Be Rich for Rich Reverbs!!

Your general opinion of this product.

Built very well. front panel was missing a screw. Seems road worthy, however it will be used only for home studio work. Good solid knobs.

Best feature is the ability to edit the presets on a PC. routing capabilities are good but see below for ease of use.

Manual is fairly clear - however is doesn't tell you exactly HOW to make the connections and what type of cables are required. After using their recommendations, I could only get a MONO sound despite verifying the settings that they suggest. Turns out - you need to PAN hard left and hard right when using the LINES for the returns. (Mackie 1202VLZ) Using the Mackie STEREO returns only provided MONO sound - regardless of any settings or connections!!

Good value considering it's a Lexicon. Only 2 effects at once so it's limited there. Rack screws provided...nice!

Sound is excellent - good deep, ri


Manuals & Docs