MUTEC REF 10 & MC-3+


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The REF 10 features a clean, intuitive user interface with noble aesthetics.

  • Improves and enhances compatible DACs, audio re-clockers, music servers, and master clocks

  • Engineered around a handcrafted, ultra-low phase noise OCXO made in Germany

  • Eight galvanically isolated, individually switchable BNC clock outputs with 50 and 75 Ω impedance for maximum compatibility with clocks and DACs by other manufacturers

  • Revolutionary, sub-Hz optimized, lowest noise power supply for every circuit section

  • Highly efficient power line filtering

  • Integrated, highest-quality international linear power supply

  • 3-year extended manufacturer-guaranteed warranty


We at MUTEC felt that existing solutions in the clocking market fall short of delivering the full potential of audio productions. In our commitment to advancing the state of the art and science we set out to investigate the possibilities to further enhance the performance of digital audio systems. To do so, we recruited one of Germany’s most renowned RF engineers to join our R&D team. Together we developed a master clock generator with a technical performance beyond what we thought could be possible. The effects of the technical performance were then verified by a group of experience audiophile beta testers to ensure that the high-end performance translates to best-in-class sound.


The final result of our extensive efforts is the REF 10: a superior 10 MHz reference master clock and our first Empyreal Class product combining uncompromising engineering with the beauty of simplicity and the utmost clock precision. The new Empyreal Class is our commitment to high-end consumer audio in its most sophisticated form. Apart from exceptional sound performance these products feature a streamlined interface with fewer parameters and user-friendly operation. Just like any Empyreal Class product, the REF 10 is an investment in highest audio quality “Made in Germany” - an aspiration reflected by our extended manufacturer-guaranteed warranty of three years.

We premiered the REF 10 in its latest form at the High End show in Munich this May and the response couldn't have been more positive. Despite the background noise of the show floor the positive effects of the REF 10 in a very basic headphone playback system were astoninishingly audible.

But don't just take the word from us! The first feedback from early reviewers and beta-testers is very promising as well:

"The REF 10 makes everything sound both louder and more dynamic, which for a mastering engineer is the holy grail." – Matt Colton, Alchemy Mastering London

"I didn't believe it was possible, but everything sounds better yet with the REF 10. The sound is not as hard and digital, but significantly smoother and (yes, indeed) more audiophile." – Harald Wittig, Fidelity Magazin (review pending)


  • As an audiophile performance enhancement for compatible DACs, master clocks, and re-clockers by any other brand

  • As an ultra-low noise, high stability clock reference for the entire digital audio chain at home or in the studio

  • To stabilize existing audio clock generators

  • As an ideal high-end upgrade for MUTEC's own MC-3+, MC-3+USB, and iClock/iClock dp master clocks


The MC-3+ Smart Clock is developed to significantly improve the audiophile quality of connected digital audio devices in two ways: At first by clocking devices with ultra-low-jitter Word Clock signals and secondly by aggressively re-clocking incoming digital audio signals.

  • Incorporates MUTEC's unique 1G-Clock Technology for lowest jitter possible

  • Improves audiophile quality of any connected digital audio device

  • Re-clocks digital audio most aggressively

  • Raises clearly audible the sound quality of any DA converter

  • Eliminates digital "Clicks and Pops"

  • Enhances existing master clocks

  • Digitally-compensated clock accuracy for highest precision of the generated clocks

  • Locks to 10 MHz clock signals of so-called Atomic clocks or GPS receivers

  • Outputs clock signals fail-safe in any state of operation

  • Generates Word Clocks, Super Clocks, AES3 + S/P-DIF blanks simultaneously

  • Converts between AES3 and S/P-DIF as well as between AES11 and Word Clock

  • Generates Word Clocks up to 768.0 kHz

  • New-designed, simple user interface

  • Front panel lock-out for preventing misuse

  • Rack-space-saving 9.5" housing

  • Built-in, international power supply