MOTU M64 Interface with 256 Simultaneous MADI I/O Channels

$ 595.00

Primarily facilitating MADI connections, MOTU’S M64 is a digital-audio interface which allows you to route, split monitor, link, and apply effects with flexibility and ease. The device can also interface with AVB/TSN infrastructures, act as a standalone mixer, and accomplish further functions. For connecting to your computer or host device, the M64 utilizes a USB 2.0 termination point—class compliant and compatible with both USB 3.0 connections and iOS. You can also use a CAT5e Ethernet connection with Mac computers, provided you’re running OS X 10.11 or later, and provided the computer in question has a thunderbolt port.

With this unit, MADI is the name the game, as the M64 sports two optical connections for 64 I/O MADI, as well as BNC connections facilitating 64 I/O channels of MADI. All standard formats and sample rates are supported, from 44.1 to 192 kHz, and a duplicate BNC output is provided for mirroring the coaxial bank to a secondary destination point, obviating the need for a separate splitter. This configuration, alongside the headphone output (which can be set to monitor any stereo source) gives you 256 inputs and 258 outputs in total. In addition to its MADI capabilities, the M64 can distribute eight 8-channel banks of network-audio I/O, and thus, operate as part of a larger ecosystem of MOTU devices, all linking over an AVB-TSN and controllable wirelessly over Wi-Fi. For this express purpose, the MOTU Pro Audio Control web app has been created, working across platforms to provide seamless integration, manipulation, and coordination of digital audio. Any network you set up in such a fashion will function with ultra-low latency, even whilst handling hundreds of channels over long cable runs. Also included with the M64 is a 32-bit, floating-point DSP engine. This engine provides a routing matrix with 48 channels and 12 stereo busses, as well as effects modelled on several prized pieces of hardware, audio analysis tools, and the AudioDesk DAW for Mac and Windows platforms.

  • High-Speed USB 2.0 Computer Interface
  • 192 I/O via MADI & AVB/TSN
  • Optical and Coaxial MADI Ports
  • 48-Channel Software Mixer with DSP

Box Contains

    MOTU M64 Interface with 256 Simultaneous MADI I/O Channels
    • USB Cable
    • DC Power Adapter
    • Rackmount Kit with Brackets & Screws
    • Limited 2-Year Warranty

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Easy 30 Day Return Policy

If you are dissatisfied with your purchase for any reason, you may return it to Kellards within 30 days of the purchase date, subject to the conditions and exclusions below.

You may initiate a return or exchange by requesting an RMA at

Securely affix your return label to the outside of the shipping package. Return shipping fees are the responsibility of the customer. We recommend you ship via insured ground service with a tracking number. We cannot be responsible for lost packages.

Return Address

Kellards Return
3237 Greenpoint Ave.
Long Island City NY 11101

Eligibility Conditions

Please read conditions below. If all conditions are not met, Kellards reserves the right to refuse the return or to charge a minimum 15% restocking fee. All returned items must be in new condition, in their original unaltered box (including an intact UPC code) and must include all packing material, blank warranty cards, manuals and accessories. Kellards can only refund the original purchase price. Shipping and handling fees are nonrefundable.

Nonreturnable Items

  • Electronic software downloads
  • Opened consumable items (e.g., film, tapes, paper, bulbs, CD, DVDs, ink cartridges, etc.)
  • Underwater equipment that has been submerged

Defective or Damaged Items

Defective items may be repaired, exchanged or refunded at our discretion for the same model or manufacturer's equivalent model.


Please allow 3-5 business days for mail-in exchanges to be processed.

Refunds & Credits

Once we receive and inspect your item(s), we will credit your account. Please allow 5-7 days for a credit to appear on your account. In most cases, we will issue your refund in the same way you made the original purchase.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.