Grimm Audio MU1 and MU2 Music Players

On 9/29/2024 at 4:44 PM, johnli said:

Hi guys

Slightly off topic

 

has your MU1 ever failed to recognized the installed SSD? Mine happened twice

first time- unplug and restart did the trick

 

this time- nothing helped

 

i then plug in an external USB hard disk with songs and worked well

 

dont know how to gain access to the SSD again

the HEAP folder is not there anymore

 

hmmmmm

don’t know if you still have this problem or contacted Grimm yet, but came across an earlier post on this thread with exact same problem, with a solution provided by Grimm (you may have to look a few posts up & down):

https://audiophilestyle.com/forums/topic/58754-grimm-audio-mu1-and-mu2-music-players/?do=findComment&comment=1260019

On 9/29/2024 at 9:23 AM, nmcleod said:

Thank you for helping me understand this and confirming we can use any fixed setting at or below 0 DB without quality impact if using external pre.

Please let us know what you hear as you lower the fixed setting.  I'm currently experimenting with a fixed setting of -7dB.  Very interesting...

Darko’s podcast with Eelco Grimm about the MU2 is available:

https://darko.audio/2024/09/podcast-whats-going-on-inside-an-e18000-streaming-dac/

An interesting interview for sure, with nice insights on the level of detail and the collective experience that has been put in the design. The importance to have control over the various elements in the chain/signal path is made apparent. Grimm’s passion for quality playback is obvious, where every detail matters, with a ‘quite nice’ result 👍

So it seems to me that there is no way to actually by pass the pre amp in the mu2, is my understanding correct?

4 hours ago, photobillyli said:

So it seems to me that there is no way to actually by pass the pre amp in the mu2, is my understanding correct?

That's correct, the DAC buffer stage and internal 'preamp' are one.

10 hours ago, photobillyli said:

So it seems to me that there is no way to actually by pass the pre amp in the mu2, is my understanding correct?

A good preamplifier built in is surely a major bonus.

I am surprised what people choose to complain about.

Surely its a free market. If it doesn't suit you you don't buy it.

Simplifying a gorgeous system into so few boxes is surely a major bonus. (reclocker, streamer, DAC and preamp all in one box is wonderful).

In an ideal world I would have loved a 10m clock input but I hugely respect the beauty and external simplicity of the product.

I am just running a MU1 at present and would have to go down to just 1 system if I upgrade to the MU2 but it is very tempting :)

Regards Andrew Watson

10 hours ago, Eelco Grimm said:

That's correct, the DAC buffer stage and internal 'preamp' are one.

Thanks. The MU2 is attractive to me because I only need to add the power amp or a pair of active speakers.

However, for my future expansion, I may want to add a high-quality preamp in between to further improve the SQ of my system. Therefore, I want to make sure that the MU2 is also capable of this option.

As you have said that, the MU2 is not able to bypass the built-in preamp. If I add a preamp to the MU2, there will be two preamps in the system and will this have negative effect on the the sound quality? Or do you simply suggest not using a separate preamp and sticking with the built-in one?

4 hours ago, camhstriage said:

Surely its a free market. If it doesn't suit you you don't buy it.

Exactly, I am trying to know as much as possible about this prodcut and make sure it suits me before I buy it.  

10 minutes ago, FredM said:

The Dutch Audio Events 2024 will open its doors today!

 

For those who are interested (and are hopefully able to attent), Grimm will play in various rooms. I’m mostly looking forward to visit the Grimm room (116) with the new LS1 speakersystem in action, the updated/topmodel: LS1c.

OMW! 🥳