Grimm Audio MU1 and MU2 Network Players Earn JPLAY Certification
Valeriy Bagrintsev
Music Tech
4 minute read
Grimm Audio MU1 and MU2 Network Players Earn JPLAY Certification
Elevate your audio experience with Grimm Audio MU1 and MU2 players now fully certified for seamless JPLAY integration.
Grimm Audio Joins JPLAY Certified Program
If you’re a fan of premium audio gear, here’s some exciting news. Grimm Audio has officially joined the JPLAY Certified partner program, meaning their network music players — the MU1 and MU2 — have passed rigorous testing for compatibility, stability, and quality with the JPLAY app. For owners of these devices, this certification promises smoother integration and more intuitive playback control in your high-end network audio setup.

A Game-Changing Upgrade: UPnP Eventing Support
The star feature in JPLAY’s new version 1.4.3, now available on the Apple App Store, is UPnP Eventing. This advancement enables true two-way communication between the JPLAY app and Grimm Audio’s MU1 and MU2 players. What does that mean for you?
Well, you’re no longer confined to controlling playback solely through the app. You can start or stop your music directly on the device itself using the rotary dial, infrared remote, or other control methods. This bidirectional flow brings a new level of convenience and responsiveness, turning your listening sessions into a real tactile experience.
Seamless Synchronization for Effortless Control
One of the best parts about this integration is how JPLAY and the Grimm Audio MU1/MU2 players stay perfectly in sync — no matter how you choose to control them. Whether you’re tapping on your iPhone or twisting the dial on the player itself, your commands will align flawlessly.
For MU1 and MU2 owners, the UPnP Eventing feature is enabled by default in the JPLAY app, meaning zero hassle when setting things up. Marcin Ostapowicz, founder of JPLAY, highlights how this collaboration makes the MU1, MU2, and JPLAY app feel less like separate components and more like one cohesive music system.

Grimm Audio’s Take: Elevating the User Experience
Eelco Grimm from Grimm Audio weighs in with enthusiasm about this expanded integration. He emphasizes the company’s commitment to delivering a rich, user-friendly experience and praises JPLAY as one of the top hi-fi apps out there. According to him, this update makes the app feel like a natural extension of the MU1 and MU2 players themselves — a perfect match for audiophiles seeking effortless control over their music.
More Features in JPLAY 1.4.3 Update
But wait, there’s more than just UPnP Eventing in this update. JPLAY 1.4.3 introduces several perks designed to enhance your audio setup:
- Direct Disk Playback support for HQPlayer and MinimServer configurations
- Improved interaction with HQPlayer
- New Queue Radio modes for varied listening options
- Bug fixes and performance optimizations to keep things running smoothly
This update is available for free to existing users via the Apple App Store and supports iOS devices including iPhone, iPad, and Macs powered by Apple’s M-series chips. Notably, the update doesn’t mention an Android version just yet.

“Thanks to the collaboration with Grimm Audio, the MU1 and MU2 players and JPLAY app are now perceived as a single system.”
– Marcin Ostapowicz
Final Thoughts: Why This Matters for Audiophiles
For anyone who’s spent hours curating the perfect digital music setup, the devil is in the details. Getting your hardware and software to speak the same language can be a headache, but Grimm Audio’s MU1 and MU2 players receiving JPLAY certification means less frustration and more pure listening joy.
This upgrade doesn’t just add technical bells and whistles; it transforms how you interact with your music library. Imagine effortlessly switching from app control to hardware knobs without missing a beat — that’s the kind of seamless experience that true music lovers crave.
FAQ
- What does JPLAY certification mean for Grimm Audio MU1 and MU2?
It confirms these players have passed extensive tests for compatibility and stable performance with the JPLAY app, ensuring smooth integration. - What is UPnP Eventing and why is it important?
UPnP Eventing allows two-way communication between the app and the player, enabling controls to be used interchangeably without losing sync. - Can I control music playback directly on the MU1 and MU2 devices?
Yes, thanks to the new JPLAY integration, controls like the rotary dial and remote can start or stop playback independently of the app. - Is the JPLAY 1.4.3 update free?
Yes, current JPLAY users can download the update free from the Apple App Store. - Are there plans for an Android version of JPLAY 1.4.3?
The update announcement does not mention an Android version at this time.
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