Grimm MU1 Streamer - Really "The Best"?


I've recently become interested in the Grimm MU1.  While reviews of top end players from Innuos, Aurender and Antipodes and others are typically all very positive, the tone of the many pro reviews of the Grimm MU1 go far, far beyond, with some reviews resorting to using superlatives and gushing of positive system transformation and not being able to stop listening to material, etc..  HiFi Advice and Steve Huff (actually calls it "magic") have such reviews.

Given the delay in availability of the Innuos Pulsar which I'm told will be better than my current Zenith Mk3 + PhoenixUSB reclocker, I am interested in replacing my streaming setup with a one-box solution that includes a high-precision clock.  The new streamer will continue to feed my Gryphon Diablo 300's DAC module, which I have no interest in replacing.

I'm actually a fan of Innuos, after they improved the sound of my Zenith with firmware updates and after I added their PhoenixUSB reclocker. I appreciate this commitment to improving sound quality which is why I was so interested in the Pulsar.

The trigger for considering an upgrade is not for improved sound, but rather, to solve some issues I have with too many Audioquest power cords coiled and clumped together. I will get to lose one of them and one of my USB cords with a one-box streamer. I've noticed my sound is very sensitive to positioning of my AC cords and find I often need to re-adjust the PC feeding my amp to get proper sounding vocals at center stage.  One of my subs also seems to be picking up AC noise when the crossover is set above 60Hz. The second trigger is simply system simplification, removing one box.  All that said I don't really have any complaints regarding sound, and the PhoenixUSB reclocker truly did improve the sound of my Zenith.

While the Grimm MU1 has it's 4X upsampling up it's sleeve with reviewers absolutely glowing over this feature and it's extreme ability to separate tones to the left, right, front, and back far better than the rest, I don't see that Grimm has gone to any lengths with regard to power supply management in the way other brands do including Innuos. The MU1's ultra-simplistic interior doesn't bug me, but the lack of transformers and power management makes me wonder....

Are there any updates from folks who have directly compared the MU1 vs similarly classed streamers from the competition?  Did you find it to be as revelatory as the pro reviewers found it? And, how does it compare to other streamers with it's 4X upsampling disabled?  Does it sound like it suffers from it's lack of power management?  I do see that the clock should be very good...

 

 

nyev

@nyev The Merason is 24/96 at the AES input. When I owned it I had an Innuos Zenith and fed it via USB. Since I never enabled Roon to upsample so I only fed it native resolutions. Regarding how it sounds with the Grimm MU1 at 2fs only, it will still sound good.

 

The Merason was suggested as a very solid, well executed, beautiful sounding dac for very reasonable money. It will give you a good idea of where on the performance bar your Gryphon dac board measures up. I suspect the MU1 will elevate the performance of your Gryphon dac via aes that you have yet to experience and the Merason dac will provide a very nice data point for comparison. IIRC the Merason runs dual mono with two dacs with true balanced outputs. Since the interconnects you’ve chosen exceed the $ value of the Merason, I also suspect that $3.5k-ish USD preowned invested in the Merason dac and the $5k-ish USD retail Shunyata interconnects will prove to be a less attractive value proposition than your Gryphon dac. (Subtle, tongue in cheek poke at you there haha) But this exercise should tell you alot. You can set the Grimm up as your roon core, attach the wonderful Shunyata Omega (v1 or v2?) AES/EBU cable to your Gryphon dac and you will hear all your Gryphon dac is capable of. You could also configure your Innuos as an endpoint feeding your phoenix and then via usb to your Gryphon dac and switch between the two streams conveniently.

 

Did I roll my eyes???? Yeah, I have to be honest I did a little bit LOL.

 

At the end of the day, try not to get too hung up on bit rates and focus on the sound. I predict that your opinion of your Gryphon dac will spike once you’ve heard it with the Grimm once its well run in. There are many roads to happiness with this exercise. Are there even higher performing solutions? Of course…for me, my system and my ears I found the Grimm to be first class experience for frequent flyer miles money. Let me clearly state though and you already know my feelings…dropping in $10kish USD of cables on the two sides of the Merason leaves me with heartburn although its your party, you get to design the menu.

 

Ive heard from a couple reputable sources that the Grimm mu1 and mola mola tambaqui is a pretty magical combo. don’t underestimate the benefits of a world class dac with a world class digital source. i just got my lampizator horizon its a total game changer i had no idea the sound im hearing was even possible with my setup.

Thanks @ghasley , all makes sense with the DAC1.  At 2X OS I can compare the DAC 1 and the Gryphon DAC and see who wins.  That will still be a valid test of how a very well regarded outboard DAC compares.  The used DAC 1 cost me relatively little and I can always sell it get a different DAC if it happens to win the test.  Maybe the Tambaqui, who knows. 

If my Gryphon DAC survives and I’m left with that and the MU1, I will have an uber AES interconnect between them, the Omega.  As far as I can tell my Gryphon’s AES input will go to 192k.

If the DAC 1 wins, I have a unnecessarily premium interconnect.

 

 

 

@nyev 

Frankly speaking, I hope your jaw drops when you hear your Gryphon dac. It would be really cool if there is a unique synergy between a server/streamer and your Diablo/Diablo dac. That was your original goal and to most of us, it is irrelevant whether it is an Aurender, Innuos, Taiko, Antipodes, Grimm, etc, etc. Certainly there are fan boys of some gear and while I'm quite happy with my Grimm, anyone who has experienced a Taiko knows there is more there, there.

 

Everything comes at a cost and regardless of what we each can/can't/should/shouldn't spend, we each punch out where it makes sense for us. For instance, I have have a dedicated room on the lower level of our home. When the heater/air conditioner kicks on I can hear the air from the vents. If I am seriously listening, I adjust the thermostat so it wont come on but usually, I just could care less. I set up the system to sound great in a reasonably quiet room but houses typically have some occasional noise. Every time I think of going more elaborate with my setup, I ask myself how crazy will I be the next time the HVAC kicks on and then I pump the brakes.

 

I'm certain an Audio Note Ongaku sounds better than my amp...its just not relevant to my circumstance or enjoyment. Some Audiogoners may even squeal a bit and protest when you pick a piece of gear OVER the piece of gear they have. Who cares? While I hope the Grimm is a good fit for you, only you can decide what you like. As I've said earlier in the thread, none of the gear you are trying will sound broken...some just check your boxes, with your gear, in your room all run through the filter of your preferences. I've had good friends love something that I didn't and vice versa....horses for courses they say. I preferred Grimm in direct comparison to Aurender and Innuos. Others prefer the opposite....but something I have yet to see in the forums is "I thought the Taiko sounded broken, flat, horrible".

 

Regarding cables, If the difference made by inserting $5k interconnects into your system is worth it to you, then its worth it. Don't let anyone tell you any different. Its ok to bring a gun to a knife fight.