Audio by mark jones
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Grimm Audio was founded in 2004 and is based in Eindhoven, The Netherlands.

All Grimm Audio products carry the joined insight of well known scientists in the fields of audio electronics, acoustics and physics, fused with an intuition build on the experience of many years of focussed listening, professional engineering and audiophile enthusiasm.

Grimm Audio uses the highest level of technical and audiophile knowledge to build audio equipment that has no equivalent.
MU1 features and specs
  • AES and S/PDIF outputs. Surround playback option with 6 digital output channels available.
  • S/PDIF, AES and optical inputs.
  • All Sample rates and formats are supported
  • Infrared Remote Control
  • Tidal and Qobuz Support
MU1
$12500 USD

The MU1 is the ultimate digital music source. Combined with the LS1, it forms a peerlessly elegant High-End audio system.
The MU1 is a music streamer, and runs Roon Core Server on a Linux-based computer system, while being housed in a cabinet of minimalist elegance, making it the gem of your listening room.

Steve Huff review of the M1 Stereophile Review of the M1
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Other Products by Grimm Audio
MU1
$12500 USD

The MU1 is the ultimate digital music source. Combined with the LS1, it forms a peerlessly elegant High-End audio system.
The MU1 is a music streamer, and runs Roon Core Server on a Linux-based computer system, while being housed in a cabinet of minimalist elegance, making it the gem of your listening room.

Steve Huff review of the M1 Stereophile Review of the M1
https://audiobymarkjones.ca/wp-content/uploads/2023/12/Grimm-MU1-2023-scaled.jpg
MU1 technical specs
  • AES and S/PDIF outputs. Surround playback option with 6 digital output channels available.
  • S/PDIF, AES and optical inputs.
  • All Sample rates and formats are supported
  • Infrared Remote Control
  • Tidal and Qobuz Support
MU2
$17500 USD

The MU2 combines a music streamer with a superb DAC and a reference quality analog pre amp. Its built-in DAC takes full advantage of the Grimm Audio low jitter clock and high performance FPGA processor. A relay based analog volume control enables the MU2 to become the true ‘hub’ of your hifi system for both digital and analog sources.

 https://audiobymarkjones.ca/wp-content/uploads/2023/12/MU2-v1-scaled.jpg
MU2 technical specs
  • InputsDigital AES, spdif and optical inputs as well as analog XLR and RCA inputs
  • OutputsAnalog XLR and RCA outputs, as well as headphone output
  • External USB and NAS storage, optional internal SSD
  • Infrared remote control
  • All sample rates and formats supported
PW1 Phono Stage
$4,900

Grimm Audio’s co-founder Peter van Willenswaard spent a life time designing and improving phono preamps, both in solid state and with tubes. Of all stages of audio amplification, phono preamplifiers pose the biggest challenges to a designer. With moving coil cartridges, deep
bass signals of a mere 50 nV require no less than 90 dB amplification!
For the PW1 “Phono Wizard”, Peter managed to develop a solid state phono preamplifier that matches his best tube based designs.

 https://audiobymarkjones.ca/wp-content/uploads/2025/03/pw1_small.jpg
PW1 Phono Stage technical specs
  • MM/RIAA gain 37 dB ±1 dB. Sensitivity: typical 5 mV.
  • MC gainMM/RIAA gain plus 20 or 30 dB. Sensitivity: typical 500 µV (20 dB gain) or 160 µV (30 dB gain).
  • Optional output boost+10 dB
  • THD+NMM ≤ -45 dB (1 kHz, 5 mV); MC ≤ -45 dB (1 kHz, 500 µV)