0% up to 48 Months on over 110 Brands!

New & Current Vintage King Card Holders

$ 6,999 .00
or $195/month for 36 months 0% interest for 36 months. 36 equal monthly payments required. Learn more
More On Order
This product is in high demand and we are shipping as many orders as we can. Place your order today to be included in the earliest possible shipment. Order now and we'll ship when in stock from one of our three fulfillment centers.



Avid Pro Tools MTRX II Audio Interface Base Unit

Powerful studio centerpiece that builds on the I/O, routing, and monitoring versatility of the MTRX now with integrated DigiLink, Dante, MADI, and SPQ speaker processing plus eight I/O card slots

MFR# 9900-74279-00

Product Description

The Avid Pro Tools | MTRX II is a powerful studio centerpiece that builds on the I/O, routing, and monitoring versatility of its predecessor. With integrated DigiLink, Dante, MADI, and SPQ Speaker Processing, eight I/O card slots, and 256 channels of optional Thunderbolt 3 connectivity, you can take on the largest music and audio productions with ease.


Pro Tools | MTRX II not only comes with 64 channels of built-in DigiLink I/O, 256 channels of Dante, and 64 channels of MADI, it’s fully modular. Configure its eight card slots with all the analog, digital, and additional DigiLink, Dante, and other I/O you need (the same option cards as MTRX) to support any artist, ensemble, or workflow. Add Thunderbolt 3 connectivity. Replace multiple single-format interfaces taking up rack space. Route any signal between different I/O formats. And connect multiple HDX systems and DAWs together with a single interface.


Building on the MTRX legacy, MTRX II delivers the cleanest, most transparent, and highly detailed AD and DA conversion of any audio interface. This enables you to capture vocals and acoustic instruments without any coloration—exactly as the sources sound—and then monitor your mix in all its sonic glory through some of the highest quality audio converters in the industry.


With integrated SPQ Speaker Processing, DADman Pro | Mon for monitor calibration and control, and the expanded 512 x 64 summing mixer, MTRX II will satisfy all of your monitoring needs. Calibrate your speakers to compensate for their acoustic response in any room with up to 16 filters per monitor channel. And get up to 128 channels of room correction, each with adjustable delay and filters, from stereo to multistem Dolby Atmos summing.


With 256 integrated Dante channels, you can connect your Pro Tools | HDX system to any Dante network—the industry’s preferred audioover-IP solution. Not only is Ethernet economical—especially where long cable runs are required—it allows for a more versatile bi-directional workflow that leverages your facility’s Ethernet infrastructure to route audio between multiple rooms and devices.


  • Connect to Pro Tools, Core Audio DAWs, Avid control surfaces, and other studio devices with built-in I/O and monitor calibration (or use it standalone):
    • 64 channels of DigiLink I/O
    • 256 channels of Dante I/O
    • 64 channels of MADI I/O
    • Word Clock I/O
    • 128 channels of SPQ Speaker Processing
  • Customize the interface with all the I/O you need—including mic/line, Thunderbolt 3, AES3, and additional DigiLink, Dante, and more—through eight option card slots
  • Capture audio in the highest sound quality with renowned DAD mic preamps and AD/DA converters
  • Set up a low-latency, 256-channel native Pro Tools or other DAW system with the Thunderbolt 3 option
  • Calibrate and control MTRX II with the included DADman software and Pro | Mon Monitor Control
  • Route audio to any connected device across your facility with the 4,096 x 4,096 router
  • Accommodate a full theatrical Dolby Atmos configuration with the 512 x 64 summing mixer
  • Take remote control of all sources with Avid S6 and other EUCON-enabled control surfaces



  • 64 channels of DigiLink I/O (via two 32-channel DigiLink Mini ports) at all sample rates
  • 64 channels of MADI I/O at 44.1/48 kHz, 32 channels at 88.2/96 kHz, or 12 channels at 176.4/192 kHz
  • 256 channels of Dante I/O at 44.1/48 kHz, 128 channels at 88.2/96 kHz, or 64 channels at 176.4/192 kHz (IP core)


  • Digital cross-point matrix (input to output routing): 4,096 x 4,096
  • Summing matrix with monitor profiles: 512 x 64 (supports full theatrical Dolby Atmos mixing), Monitor Groups, Fold Downs, Group Formats
  • Room calibration: Built-in SPQ speaker processing with 256 filters on 16 channels; delay management adjustable up to 150 ms per channel


  • Supported DAWs: Pro Tools, Logic Pro, Cubase, and other Core Audio workstations
  • EUCON integration: Yes
  • System sync: Word Clock/video black burst (VBB) via BNC connectors, Dante Sync, Digital Inputs
  • Supported sample rates: 44.1 kHz – 384 kHz
  • Chassis: 2U 19” rack-mountable unit

Product Specifications

Condition New
Package Contents Pro Tools MTRX II base unit, Pro Mon 3 monitoring control, DADman software, and AC power cable
Chassis 19-inch Rack-mount
Rack Spaces 2U
Input Connectors Ethernet
Output Connectors Ethernet
Computer Connection Digilink Mini
Clock I/O In, Out
Maximum Sampling Rate 384 kHz
Digital Format Dante, MADI

Product Reviews

No one has written a review yet. Be the first!

* Required Fields

Share Your Opinion

The best gear advice always comes from those who use it the most. That's where you come in! Let the pro audio world hear your voice with a review of the Avid Pro Tools MTRX II Audio Interface Base Unit . Once you submit your review, please check your email and verify your address to have it posted.

How do you rate this product?
I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.
The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
James P.
Thank you so much! Vintage King has been so fair and easy to work with. I can't thank you enough. It feels good to trust such a hefty purchase to folks who are so helpful and knowledgeable. Vintage King is a sound designers dream store.
Noa L.
You guys have excellent customer service and I am excited about the next upgrade I complete on my fifth recording facility. I've been in the studio business for forty plus years. The salesman I worked with at Vintage King was the best of the best. You all rock!
Robby T.
I would recommend Vintage King to any one looking for top-class gear, unbeatable customer service and the best prices on the map!
Jake D.
My experience with Vintage King was excellent. The order was here fast considering it was out of stock. The sales person had SKB send it to me directly and I couldn't have been more pleased.
Michael D.
From the minute I placed my order I was kept well-informed through each step in your process. Even though I was buying a comparatively modest piece of gear, your attention to detail made me feel like I was purchasing a six-figure mixing desk.
Thomas W.
I am a new customer of yours. You guys provided me the absolute best deals in ordering all the equipment to power my brand new recording studio. Your customer service is amazing and i will always deal with you from here on out.
Rob M.
Thanks for your great service and getting this out today. You guys really are the Kings!
Alan B.
Better than expected! Truly impeccable service. Your team was professional, knowledgeable, provided speedy delivery above and beyond standard. Vintage King Audio is definitely my go to for all of my audio and information needs.
James O.