Quad Rate DSD and MQA USB Input Module


Standard USB inputs on DACs are common. What isn’t common is what we do with ours. The entire USB module has a high level of isolation between the USB hardware and the DAC. The USB interface is limited to 384kHz and 4xDSD. Our MQA version also supports full MQA decoding.


The input interface can have a significant impact on both the sound quality of the DAC, as well as the overall user experience. Input interfaces are constantly changing and are the main reason why digital equipment becomes obsolete. For this reason, we’ve made our inputs standardized modules that are user replaceable. In each module, we individually design each interface to perform at its absolute peak performance, with minimum noise, jitter, and maximum isolation. While each interface can transfer data to DAC, each has its own advantages and disadvantages. The primary difference between each interface is they add different amounts of noise and jitter to the audio system. With each interface,our goal is to have perfectly isolated, bit-perfect, low noise and low jitter data transfer.

MSB input modules are a standardized, swappable design that supports all of our DACs. This allows any module to be moved from one DAC to another for seemless upgradeability. Each module uses a toolless lever lock system for modules that allows simple, quick upgrades and replacements.

Each interface has advantages and disadvantages.


  • Synchronous to the DAC
  • Works with most music server and computer systems that support USB audio
  • Works at rates up to 24/384kHz and 4xDSD


  • Limited level of isolation between the DAC and the often extremely noisy source
  • Offers no software control of the DAC from the host source (Volume, etc…)
  • Limited to short cable lengths

The USB input is a convenient way to directly connect your computer or laptop to your MSB DAC for easy digital media playback. Standard USB inputs on DACs are common. What is not common is what we do with ours. All MSB USB Inputs were developed using an in-house hardware design for optimal audio playback performance. The entire USB module has a high level of isolation between the USB hardware and the DAC. The USB interface is limited to 384kHz and 4xDSD. Our MQA version also supports full MQA decoding. MSB offers a modular solution that is easily installed for all current DAC models. Older DAC models such as the DAC IV/IV+, Analog DAC, and DAC V are still supported and USB solutions are currently available.


MSB Technology

Who we are. What we do.

Located in Silicon Valley, our dedicated engineers and production specialists work to bring you the best in high-end audio. Combining elegant design thinking with a passion for lifelike reproduction, our close-knit team, led by brothers Jonathan and Daniel Gullman, build and curate a wide array of hifi products—DACs, transports and amplifiers—setting an industry benchmark. By relying on tight integration between electrical, mechanical and consumer needs, we strive to push the listening experience further. At the end of the day, our joy comes from innovation and sharing our leading-edge technologies with the world.

Designing DACs for more than 25 years has given us keen insights for future ready products. Now, more than ever, our product range has the most flexible architechture yet. California based in-house development and manufacturing has evolved the digital front-end to a new level of playback.

Our people. Our values. Our culture.

We’re a small team of elite designers and technicians united by our love for high-end audio. While we’re builders at heart, our company culture drives the innovation and passion that makes MSB what it is today.

This is who we are.
    • Empower People We rely on a diverse and inclusive work environment where our team is equipped to solve problems on their own—but are invited to seek support when needed.
    • Optimize Quality We promote a culture of growth and improvement that relies upon precision, maintaining high standards and holding ourselves accountable for the work we do.
    • Honest Design We create and support long lasting products while maintaining simple, functional and intelligent design that performs at the highest level.
    • Promote Sustainability We maintain our environmental responsibility by seeking better manufacturing processes and minimizing use of resources.

We believe collaboration leads to excellence. Each member of the MSB team plays a critical role in getting our product out of our doors and into your home.

Contact Us:
    • North America Vince Galbo Sales Manager Phone: (716) 688-3527 vince@msbtechnology.com
    • Europe Very Fine Solutions Frank Vermeylen European Sales Manager Phone: +32 472 42 5775 frank@veryfinesolutions.eu www.veryfinesolutions.com
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    • MSB Technology Factory & MSB Technology Corp 15 Brennan St. Watsonville CA, 95076 Phone: (831) 662-2800 Hours of operation: Monday – Thursday 8:00am – 5:00pm PST Any questions, email daniel@msbtechnology.com
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