Grimm Audio | MU2 DAC

A complete digital front end: streamer, DAC and preamplifier in one component

The Grimm Audio MU2 is a reference-level digital front end that combines a Roon Ready music streamer, DAC and preamplifier into a single, fully integrated component.

More than a convenience, the MU2 is designed to replace multiple components in a high-end system—simplifying setup while improving coherence, timing and overall musical engagement.

We typically recommend the MU2 as the central hub of a system built around long-term listening—not incremental upgrades.

What the MU2 Does in a System

The MU2 isn’t just a DAC with streaming added. It functions as a complete digital front end:

• Roon Core (with optional internal storage up to 4TB)

• Roon Endpoint

• TIDAL Connect and UPnP rendering

• Grimm’s proprietary FPGA DAC

• A fully realized analog preamplifier stage

In many systems, it can replace:

• A separate Roon server

• A standalone streamer

• A DAC

• And often, a line-stage preamplifier

This kind of integration is huge for clients who want to reduce system complexity without reducing performance..

Who the MU2 is for

• Listeners building a reference-level digital front end

• Systems where streaming is the primary source

• Those looking to simplify without compromising performance

• Owners of high-efficiency speakers and resolving systems

Our perspective

We think of the MU2 less as a “DAC” and more as the center of a system.

When used this way—often directly into a power amplifier—it can replace multiple components while improving overall coherence and timing.

In systems where streaming is the primary source, this kind of integration tends to outperform more complex chains of separate boxes.

Listening with the MU2

We’ve spent considerable time living with the MU2 in our own system—not as a component in showroom, but as part of our daily listening system at home.

What surprised us wasn’t ease of use, but the engagement we felt.

Streaming began to feel less like access and more like deliberate listening again — a meaningful complement to analog, not a replacement for it.

For a deeper look at how the MU2 reshaped our approach to digital, read our listening notes.

Why we chose to carry the Grimm Audio MU2

The MU2 stood out to us for:

• System coherence and ease of integration

• Engineering precision without a clinical presentation

• Long-term listening satisfaction

• A design philosophy aligned with serious music listening

This is a component designed to be lived with—not cycled through. This is the real thing.

Thinking about the MU2 in your system?

We can help you think through system matching, setup, and whether the MU2 makes sense in your system—whether you're starting fresh or simplifying an existing setup.

• Contact us to talk through how the MU2 fits into your system, including optional 4TB internal storage configuration

• Full MU2 specifications are available on the Grimm Audio website.

Frequently Asked Questions

• Is the Grimm MU2 a Roon Core?

  Yes. The MU2 can function as a Roon Core and optionally includes internal storage for your music library.

• Does the Grimm MU2 include a preamplifier?

  Yes. It features a fully integrated analog preamplifier stage and can drive power amplifiers directly.

• Can the MU2 replace a separate DAC and streamer?

  In many systems, yes. It combines streaming, conversion, and volume control into a single chassis.

• Does the MU2 include internal storage?

  Internal storage is optional. The MU2 can be configured with 4TB of internal storage, or used with external drives and network-based libraries.