#1 Cannot log into Roon after database reset. After you performed a database reset you cannot login to Roon. Instead you are forwarded to the Roon login page. After returning to the Roon remote there is no response. To resolve this issue, please update your MU2 to firmware version V0.9.6 or higher. #2 Playback soundsread more >
Blog-zine
Dutch hifi journalist John van der Veer wrote a feature article about the MU2 for HVT, Hifi.nl and the Dutch Year Book 2024 of hifi.nl and HVT. John starts with describing his findings with Grimm Audio products, like the MU1: “Never knew that digital shortcomings could be restrained to such level that a purely analogread more >
Jaap Veenstra and Martijn ten Napel of Alpha Audio visited our factory in Veldhoven. They recorded a video interview with Eelco Grimm and Guido Tent about the technical backgrounds of our new MU2 streaming DAC. Unavoidably there was a lot of stuff to discuss, so in the end it became a two part series. Theread more >
We are blown away by the review that K.E. Heartsong made for his beautiful online magazine Audio Key Reviews. Never before did someone write such soulful text about a product of ours. We were deeply touched and could not resist sharing some paragraphs with you. Enjoy… “I spoke of the Grimm MU1 Streamer being atread more >
Christiaan Punter runs the online audio magazine Hifi Advice and has a great international following among audiophiles for his in-depth reviews. He enjoyed testing the MU2 extensively in December and wrote a very detailed report of his findings. Christiaan concludes: “Like the MU1, the MU2 sounds neutral yet natural, fast and articulate yet fluid, andread more >
Alpha Audio published their full MU2 review. Jaap Veenstra and Martijn ten Napel already made a ‘preview’ video in which they shared how much they were impressed by the MU2’s sound quality. And they put the MU2 in their ‘top 5 of 2023’ list! In the written review they go into more detail about theread more >
US online hifi magazine Twittering Machines has put the MU1 in their ‘favorite gear 2023’ list! Michael Lavorgna writes: “Making digital music feel human is not as easy as 1s and 0s. The Grimm MU1 adds the heart & soul: “For anyone looking to bring more refined beauty to their music while simplifying streaming andread more >
Hans Beekhuyzen of the well known Hans Beekhuyzen Channel on Youtube has the premiere of the very first public MU2 review. At 24 minutes it became his longest review ever. And not without reason. Hans was very enthusiastic about the combination of the MU1 with his Chord Dave. In his review in February 2022 heread more >
We have a small MU2 firmware release that fixes a few ‘underwater’ issues. It also adds a Roon server start and stop function in our GRUI web interface. Sometimes a support team member asks you to restart Roon and with these buttons that is quicker than turning the MU2 off and on. There is alsoread more >