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Avid MTRX HD Audio Interface - Base Unit Certified Open Box , $3,799.00 - Add to Cart Skip to Product Information

Avid MTRX HD Audio Interface - Base Unit Certified Open Box

Pro Tools | HD Audio Interface and Integrated Monitor Section for Avid Control Surfaces; Base Unit with 16-ch AES I/O, Coaxial MADI I/O Pair, 2 Mini-DigiLink Ports, Pro | Mon 2 Eucon Monitoring, and DADman Remote Control App - macOS/Windows
Avid MTRX HD Audio Interface - Base Unit
Avid MTRX HD Audio Interface - Base Unit

Chassis only. Requires I/O cards (sold separately) for operation.

Certified Open Box Savings!

Save $78 What is Certified Open Box?

The price below reflects your savings.

Savings: $78.00 New for $3,877.00

Ask An Expert Our Expertly trained Sales Engineers are ready to help! What is a Sales Engineer?
Avid MTRX HD Audio Interface - Base Unit Certified Open Box

Certified Open Box Savings!

Save $78 What is Certified Open Box?

The price below reflects your savings.

Savings: $78.00 New for $3,877.00

Avid MTRX HD Audio Interface: The Ultimate Audio and Monitor Interface

This article was Written By

Our Product Research Team

Get to know them!

For our Pro Tools | HDX and HD Native users seeking off-the-charts sonic quality and extensive routing and monitor control flexibility, Sweetwater recommends Avid's cutting-edge Pro Tools | MTRX audio interface. Avid worked closely with Digital Audio Denmark in the development of this groundbreaking interface to deliver stellar sound, with support for up to 384kHz DSD audio. And you'll find it an especially versatile addition to your workflow, serving both as your audio interface and monitor control center. Designed for deployment in demanding professional post-production and music production environments, the Avid MTRX audio interface operates both as a high-performance Pro Tools | HD interface and an integrated monitor section for Avid Control Surfaces.

Avid MTRX audio interface adapts to your workflow

Avid HDX features include Eucon-controlled monitoring, extensive integrated routing, and ultra-high-quality analog input, output, and microphone preamp card options. And you can choose which combination of modular interface options you need to adapt MTRX to your studio workflow preferences. The Avid MTRX base unit gives you 16 channels of AES I/O, one coaxial MADI I/O pair, two Mini-DigiLink ports, Pro | Mon 2 Eucon monitoring capabilities, and the DADman app for configuration and remote control from a Mac or PC.

Connectivity, reinvented

Offering a total of eight interface protocol options, the Avid HDX reinvents the concept of connectivity. For analog input and output, it lets you install up to six 8-channel AD/DA cards (including 8- and 2-channel mic preamp card options) for up to 48 channels of high-quality Avid conversion. From there, the I/O options are plentiful: up to 144 channels of AES/EBU (16 channels on the chassis), an AES3 card option with 16 channels plus SRC in, up to 256 channels of 3G-SDI, 64 channels of DigiLink (using the two rear-panel ports), 64 channels of coax MADI (via rear-panel I/O), over 1024 channels of MADI (up to 192 channels on the chassis), a Dual MADI card option with up to 128 channels via SFP coax and optical I/O, and a Dante option with up to 64 channels.

Avid MTRX Audio/Monitor Interface Features:

  • Flagship Pro Tools interface with modular flexibility
  • Digital Audio Denmark AD/DA converters with support for up to 384kHz DSD audio
  • Extended monitor control and flexible routing with S3, S6, or other Eucon surfaces
  • Pro | Mon 2 enables complete monitoring, talkback, summing, and fold-down control
  • Use as a high-quality 64-channel Pro Tools | HD interface
  • Connect and route your entire studio through AES3, MADI, Dante, and/or SDI I/O
  • Use DADman software to feed any input to any output, send audio to multiple outputs simultaneously, and otherwise route, split, and patch audio
  • Add high-quality mic preamps as an option, and remotely control them from Pro Tools
  • 8 x 8-channel card slots let you customize MTRX for your needs
  • Rock-solid sync via Word Clock, AES11, Video, and all digital I/O
  • Automatic sample rate conversion on inputs
  • MADI, Dante, and SDI I/O option cards available separately
What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.