• EN
  • DE
Skip to content
Grimm Audio
  • Home
  • Blog-zine
  • Hifi Products
  • Pro Products
  • About us
    • About us
    • Our Story
    • Who is Who
  • Contact
    • Contact
    • Hifi Sales
    • Pro Sales
Blog-zine / Reviews / Haute Fidélité: the MU2 touches on the essence of music

Haute Fidélité: the MU2 touches on the essence of music

February 21, 2025

The premier French High End Audio magazine Haute Fidélité did a review of the MU2. Author Bruno Castelluzzo was highly impressed by its functionality and sound quality. He offered it full marks on sound quality, plus the “Haute Fidélité Réference” award! Below some translated excerpts from his poetic reflections on the MU2’s sound quality.

“The MU2 stands out with its exceptional tonal definition and its high ability to reproduce micro-details without breaking the emotional connection to the music. This ultimate mastery invites the listener to sessions of prolonged listening in the bliss of discovering overlooked details, that demonstrate the remarkable qualities of the Major DAC. Acoustic instruments sound dazzlingly natural, such as an acoustic guitar accompanying a voice, that just screams with realism and truthfulness. The spectral extent has no limits, even organs are presented with unparalleled majesty thanks to a very deep extension into the bottom octaves – as long as the speakers can reach that low. (…)

The stereo image of the MU2 is of astonishing quality, provided that the power amplifier and loudspeakers do not mask the formidable spatial precision that it is capable of. The MU2 has a talent to truly sculpturing the orchestra and solists in space, presenting them life-size. This is particularly striking with complex scores, such as Shostakovich Symphony No. 8 by the Berliner Philharmoniker, conducted by Kirill Petrenko. The extreme subtlety of sound layers in this recording is clearly presented, as well as the tonal realism of all instruments, accompanied by sudden rhythmic bursts, in a perfectly controlled maelstrom, to finally highlight the beauty of this fascinating and disturbing work. (…)

The MU2’s sober and compact black aluminium case, somewhat minimalist, does not seek to visually dazzle the music lover. Its treasure is inside, in the musicality obtained through a sumptuous serenity towards the musical event, maximising all criteria of faithfulness to the recording, with a differentiating extra: the abolition of all electronic barriers between the listener and the music. Without doubt one of the very best maestros of digital and analog that can be found.”

Read about MU2 >

“Without doubt one of the very best maestros of digital and analog that can be found.” – Bruno Castelluzzo, Haute Fidélité, France.

Read more about: Reviews · Awards · Hifi · Grimm MU2
Share this on:

More for you

Full integration of JPLAY with MU1 and MU2

JPLAY is an audiophile oriented music playback and control app for iOS and MacOS. With today’s JPLAY v1.4.3 update a full integration of the app with our MU1 and MU2 streamers is achieved. The MU1 and MU2’s UPnP interface supports ‘UPnP Eventing’ and JPLAY embraces this method in their latest release. As a result theread more >

July 8, 2026

New MU1 and MU2 firmware improves sound quality and solves bugs

In new firmware for the MU1 and MU2 we offer a small but worthwhile improvement of the DSD filtering sound quality in the MU2 and of the PCM and DSD filtering in the MU1. We also addressed a couple of robustness issues that could happen in rare use cases, among others a spurious indicated coefficientread more >

July 6, 2026

Grimm Audio at brand new Asia Hi-fi Expo in Singapore

One of the world’s largest Hi-Fi publications Stereonet makes a strong move by founding a major new show in Singapore: Asia Hi-fi & AV Expo. It will be held from July 10-12 in the famous Marina Bay Sands hotel. Grimm Audio is present and exhibits in room 3910. We will show our two core productread more >

July 4, 2026

All news & reviews >

John Darko, Darko Audio, Germany (MU2)

The best DAC I’ve ever heard…

John Darko, Darko Audio, Germany (MU2)
▲Back to the top
Grimm Audio
  • Shop
  • •
  • Dealers
  • •
  • Support
  • •
  • Contact
Designed & made in the Netherlands

Designed & made in the Netherlands

Receive a present

Sign up, stay up to date and receive a present that aids to tune your bass sound.