• EN
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 / News / New firmware for MU1

New firmware for MU1

November 10, 2020

After many months of software development we proudly present the new v1.2.14 firmware of the MU1. Don’t expect a long list of added features. There are a few nice ones, but they don’t represent the huge amount of work that went into this update. The majority of labour was put in stuff that mainly lives ‘under the hood’. When we released the initial MU1 firmware, the control software that manages all that happens in the device was built to be functional. And it did the job well. However it did not offer the flexible architecture and solid fundament that’s needed to refine the MU1 over the years with new functions. 

We decided to rebuild the control system from the ground up, following the fundamental approach that our chief software engineer Michiel Schriever is famous for. The result is a stabler and faster system that truly lives up to our high standards. The user will experience a smoother operation and improved Roon integration. Also the display renders swifter and has sub pixel rendering for higher quality images. Firmware updates now download much faster.

The mentioned ’nice new features’ are optional volume control for both AES outputs, a DoP option for DSD DACs, up- and downsampling to 96 kHz or 88.2 kHz for digital systems that don’t support higher rates, adjustable power LED brightness, exFAT, HFS and HFS+ support for USB drives and a Grimm LS1 detection that disables the LS1 options in the source menu when there is no LS1 in the system. 

This update facilitates the development of a wealth of functions and improvements and we look forward a lot to offering you these in the future.

If you own a MU1, please read the new software and hardware manual and the update instructions that you can find in the download tab of the MU1 web page.

Read about MU1 > 

Read more about: News · Grimm MU1 · Hifi
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 >

That was love at first sound and second sight. Never heard a system that gets better and better as you listen longer and longer. It's an absolutely joy-machine for deep diving into music, thanks a lot for creating this future icon.

Björn Molt, Berlin, Germany (MU1 & LS1)
▲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.