Grimm Audio MU2 Streaming DAC and Preamp
Best all-in-one solution for audiophiles seeking uncompromising digital and analog performance.
The GRIMM Audio MU2 is a premium digital music player that masterfully combines a high-fidelity streamer, DAC, and analog pre-amplifier into a single, elegant unit. It features Grimm Audio’s innovative Major DAC with a unique 1.5-bit architecture for exceptional clarity and dynamic range. Integrated Roon Core server allows for computer-free streaming, while the relay-based volume control makes it the central hub for your entire hi-fi system, supporting both digital and analog sources.
$17500.00
Owner Satisfaction
4.8
/ 5
Category Rank
1
/ 493
Best Stereo Music Streaming Devices
Price vs Category Average
+365%
Above average
Dimensions
35585295
/ x x mm (WxHxD)
Who it's for
- Audiophiles prioritizing absolute timing precision and sonic transparency
- Minimalists seeking a streamlined, high-performance audio system
- Critical listeners demanding uncolored and highly accurate sound reproduction
Who should skip it
- Budget-conscious buyers seeking high-end performance for less
- Luxury enthusiasts desiring premium aesthetics and visual feedback
- Vinyl collectors needing multiple analog source connections
Performance breakdown
Major DAC Fidelity
Proprietary 1.5-bit architecture delivers breathtaking transparency and lifelike dynamic range.
Roon Integration
Seamless, computer-free Roon Core performance simplifies your high-end streaming workflow.
System Versatility
Acts as a comprehensive hub for both digital and analog sources.
Volume Control Precision
Relay-based attenuation ensures perfect channel balance and signal integrity.
Jitter Suppression
Ultra-low clock jitter provides a rock-solid, expansive stereo soundstage.
Build and Design
Elegant, compact chassis houses sophisticated circuitry with professional-grade finish.
Key Specs
Dimensions
355 x 85 x 295mm (WxHxD)
Major DAC
FPGA based discrete 1.5bit architecture
Clock Jitter
< 0.6 ps RMS
Volume Control
Relay based, -79 dB to +8 dB in 1 dB steps
Digital Inputs
3 stereo (AES, S/PDIF, Optical)
Analog Inputs
2 stereo (XLR, RCA)
Outputs
XLR, RCA, Headphone output
Optional Storage
Internal SSD up to 8TB
Features
- All-in-one: Roon Core, Streamer, DAC, Preamp
- Proprietary Major DAC for superior sound
- Computer-free Roon streaming
- Relay volume control for system hub
- Exceptional stereo imaging
- Supports Tidal and Qobuz
- Upsampling and downsampling capabilities
- Works with external CD transports
What customers say
Customers view the Grimm Audio MU2 as a reference component due to its exceptional sound quality. The audio is consistently described as transparent, natural, and highly detailed, offering superb rhythmic accuracy and a stable, layered soundstage. Users praise the seamless integration of the preamp and DAC functions, establishing the MU2 as a pure digital hub. Its minimalist design and intuitive touchscreen also enhance usability. While the performance is considered world-class, the extremely high price is the main consideration. For those seeking absolute fidelity and musical engagement, the MU2 is regarded as an endgame solution that justifies its investment.
Know before you buy
No, the MU2 features an integrated Roon Core server, allowing you to stream your music library and services directly without needing a dedicated computer or NAS on your network.
Yes, the MU2 functions as a full-featured preamplifier. It includes two analog inputs (XLR and RCA) and three digital inputs, allowing you to centralize your entire hi-fi system through its high-quality relay-based volume control.
The Major DAC is a proprietary, FPGA-based 1.5-bit design developed by Grimm Audio. It avoids the typical artifacts of standard delta-sigma chips to provide superior clarity, timing, and a more natural, analog-like sound profile.
Yes, the MU2 supports an optional internal SSD with storage capacity up to 8TB, allowing you to host your local music files directly within the device for optimal playback.
Unlike digital volume controls that can reduce resolution at lower levels, the MU2 uses high-precision relays to physically switch resistors. This ensures that the signal integrity and dynamic range remain perfectly preserved regardless of your listening volume.
Because the MU2 is a Roon-ready device, you can stream any service supported by Roon, including Qobuz and Tidal, with full integration and high-resolution playback capabilities.
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