Grimm Audio MU1 Streaming Music Server
Best high-end streamer for audiophiles seeking uncompromising digital sound quality.
The Grimm Audio MU1 is the ultimate digital music source, engineered to create an elegant high-end audio system, especially when paired with LS1 speakers. It features a robust Linux-based computer system and an in-house-designed FPGA interface board for superior format conversion. The MU1 integrates Grimm Audio's signature ultra-low jitter clock technology for exceptional sound quality. It natively runs the Roon Server, supporting up to 100,000 tracks, and seamlessly connects with external DACs for a rich user experience.
$14400.00
Owner Satisfaction
4.7
/ 5
Category Rank
44
/ 493
#44 in Stereo Music Streaming Devices
Price vs Category Average
+283%
Above average
Dimensions
35585295
/ x x mm (WxHxD)
Who it's for
- Audiophiles seeking absolute digital signal purity and sonic precision
- Music lovers managing extensive local and streaming digital libraries
- High-end system owners requiring professional-grade digital connectivity
Who should skip it
- Budget-conscious listeners seeking accessible high-fidelity streaming solutions
- Users preferring tactile, front-panel controls over app-based interfaces
- Casual listeners wanting a simple, plug-and-play streaming experience
Performance breakdown
Jitter suppression
Proprietary clock technology virtually eliminates timing errors for pristine digital playback.
Roon integration
Native server support provides a seamless, high-performance interface for large libraries.
Format conversion
Custom FPGA board handles complex signal processing with remarkable sonic transparency.
System versatility
Flexible digital I/O options accommodate a wide range of high-end setups.
Build quality
Robust industrial design reflects a premium, long-term investment in audio fidelity.
Streaming ecosystem
Focused primarily on local library management rather than broad streaming service variety.
Key Specs
Dimensions
355 x 85 x 295mm (WxHxD)
Digital Audio Inputs
3 stereo (AES, S/PDIF, optical)
Digital Audio Outputs
6 channels
Operating System
Linux-based computer system
Storage Capacity
Optional internal SSD
Warranty
5 year limited warranty
Streaming Service Support
YouTube
Video Output Interface
Optical Audio
Features
- Ultimate digital music source
- Roon Server integrated
- Ultra-low jitter clock
- Breakthrough format conversion
- Seamless LS1 integration
- Supports all sample rates
- Web control setup
- Surround playback option
What customers say
The Grimm Audio MU1 earns high praise for its exceptional sonic performance, consistently delivering a transparent and neutral digital source. Users credit its proprietary clocking technology for eliminating digital harshness, resulting in natural fluidity, superior resolution, and deep soundstaging. Integration with Roon is seamless, supported by rock solid stability and professional build quality, ensuring an effortless listening experience. The MU1 is viewed as a reference digital front end that reveals subtle musical details. While the high price point is noted, dedicated users seeking uncompromising absolute sound quality consider it the current industry benchmark for performance.
Know before you buy
Yes, the MU1 acts as a high-end digital music source and server. While it features advanced FPGA-based format conversion and clocking, you will need to connect it to an external DAC via its digital outputs to complete your audio chain.
The MU1 runs the Roon Server natively on its internal Linux-based system. This allows it to manage your library and stream music directly without needing a separate computer or dedicated Roon Core device on your network.
Absolutely. While the MU1 is designed for seamless integration with the LS1 system, its digital inputs and outputs make it compatible with a wide range of third-party DACs and high-end audio setups.
Jitter, or timing errors in the digital signal, can cause audible distortion and loss of detail. The MU1’s proprietary clock technology ensures precise timing, resulting in a cleaner, more natural soundstage and improved clarity.
The MU1 supports an optional internal SSD for local music storage. You can also stream content from network-attached storage or integrated services, providing flexibility depending on how you prefer to manage your library.
Yes, the MU1 includes a surround playback option and provides six channels of digital audio output, making it capable of handling more complex multi-channel configurations beyond standard stereo.
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