
The Grimm Audio MU1 can operate as a Roon Core and Roon Prepared endpoint, sending out digital audio through S/PDIF or AES/EBU to your DAC-O-choice. Seeing as I want to run with AES, that’s how I plan to make use of the MU1 throughout its Barn keep.
The MU1 provides 4 digital outputs together with an LS1 Management Out for connecting to Grimm’s LS1 Lively Loudspeakers, three digital inputs together with USB for attaching USB storage, a 3.5mm socket for an exterior IR distant, an IEC inlet for energy, and a tiny, little energy button. Why is it tiny and in such a tough to achieve place? Since you need go away the MU1 powered on and prepared for motion.

From Grimm:
With the MU1, our purpose was to set a brand new benchmark in music participant design. The Linux-based pc system brings strong knowledge integrity. Our in-house-designed FPGA interface board, which varieties the guts of the MU1, provides breakthrough efficiency ranges in format conversion and receives automated updates every time we have now pushed the boundaries once more. For sure, the MU1 options our trademark ultra-low jitter clock. This can be a music participant worthy of the title Grimm Audio.
The golden circle up prime is a multi-function management knob (cool!) however you can even use the browser-based Grimm app to regulate quantity, enter choice, and accessing the menu alternatives together with Upsampling all knowledge (2fs/4fs). Past the corporate brand that cleverly contains an exercise show LED doubling because the dot on the “i” in Grimm, a centered 3.5″ full shade TFT display completes the stunning easy MU1 appears to be like.
The evaluate pattern got here with an optionally available 2TB SSD for music storage , which can get loaded up with most of my library. I’ve been listening to good to nice issues in regards to the MU1’s efficiency from quite a lot of sources, so I’m very desirous to get to listening. Keep tuned!
Grimm Audio MU1 Music Participant
Value: $12,500 with no inner storage, +$235 w/2TB SSD storage (as reviewed), +$630 w/8TB SSD storage
Firm Web site: Grimm Audio
Specs
Common:
- Max. ambient temperature for operation: 40 °C.
- Fuse (worldwide): 630 mA quick blow.
- Weight: 4.5 kg.
- Dimensions: width x depth x top: 355 x 295 x 100 mm or 14” x 11.6” x 3.9”.
- Package deal dimensions: 540 x 392 x 235 mm.
Clock specs:
- Inner intrinsic clock jitter < 0.6 ps RMS (> 10 Hz).
- Can slave to 44.1 kHz and 48 kHz based mostly digital sources at 1FS, 2FS and 4FS +/- 50ppm.
- The output will mute for 80 ms when altering clock base charges.
Pattern price conversion with fpga processor:
- Upsampling of 1FS and 2FS information, streams and digital sources to 4FS or 2FS with “Pure Nyquist” decimation filter.
• Downsampling of DSD64, DSD128, DSD256 and DXD information and streams to 4FS or 2FS with “Pure Nyquist” decimation filter.
• Non-obligatory FPGA quantity management on Digital 1 and a pair of outputs, and S/PDIF in case no LS1 is related: from 0 dB to -63 dB in 0.5 dB (partly 1 dB) steps. - Latency from digital in to digital out: 11 ms at 48kHz.
Energy provide:
- Mains voltage vary: 90 – 240 V AC (50 and 60 Hz).
- Energy issue: > 0.98.
- Energy consumption: Regular use 17 W, most 50 W.
Inner pc properties:
- Intel i3 CPU, > 2.4 GHz.
- 4 cores, 4 threads, with Hyper-threading.
- 8 GB DDR4-2133 RAM 2400 MHz.
- 1000 Mb/s Ethernet.
- 1 x USB 2.0 port.
- Inner SSD for OS.
- Non-obligatory inner SSD for music knowledge storage.
Show specs:
- Full shade TFT LCD.
- 3.5 inch diagonal.
- 480 x 320 pixels.