Lumin U1 mini transport

[dtich]

@vadim thx!

[Tim_Woodward]

Mine has always done it, well only had it a couple of months…

[dtich]

Audio attenuation choices - u1m, dave, pre..?

Question to the group: It seems the analogue level out of the Chord DAVE is saturating the bal inputs to my pre (Classe SSP, old but good); for many albums the DAC setting on the DAVE is ok for the system - which outputs -3dB metered, which the manual says corresponds to 6V at the bal outputs - but on more modern masters, the levels saturate the analogue input stage and I get distortion/clipping. Consequently, I operate the DAVE in Pre mode which has a volume control in line, and in general I ha…

crossposting from separate topic post one level up…

[wklie (Peter Lie)]

@Tim_Woodward

if you use the Lumin app to set to standby, either manually or using the timer, Roon has an issue starting the track after turning the unit on.

And @dtich @2muchgear

I’m not able to reproduce this problem yet. I did three tests, these are the steps I did, please tell me what different steps I need:

Settings: In Lumin app, set Idle Sleep to some value. In Roon, auto sleep is set to never.

Test i.

1. Start Roon playback to Lumin
2. Press Pause in Roon
3. Wait for Lumin front panel to be turned off
4. Press Play in Roon

Test ii.

1. Start Roon playback to Lumin
2. Use Lumin app to standby
3. Press Play in Roon

Test iii.

1. Start Roon playback to Lumin
2. Press Pause in Roon
3. Use Lumin app to standby
4. Press Play in Roon

[dtich]

I believe that is it, Peter. But, as I noted, I had previously (mistakenly) had auto-sleep set to non-zero value in both Roon and Lumin, so… that may have contributed to this issue? I have set Lumin to ‘Never’ and kept Roon set to one hour, and will see how that works over the next day or so.

[Burkhardt_Petermann]

Got last week my Okto DAC 8 PRO and using it at the moment with a Zotac Mini PC under Windows.
Now I’ve the idea to buy again a Lumin U1 mini as front-end for this DAC.
Should this work with multichannel DSD native until DSD128?
I’m asking this, because Ropieee and also Rock or a SOtM Neo are not working together with this DAC.

[wklie (Peter Lie)]

The whole Lumin product line is stereo only, not multichannel. So it’s probably not suitable for your requirements.

@Burkhardt_Petermann

Ropieee and also Rock or a SOtM Neo are not working together with this DAC.

Assuming this is not a configuration problem, if none of these Linux-based streamers work, then I would not assume Lumin would work.

@wizardofoz knows anything about it?

[Burkhardt_Petermann]

Ok, so Lumin devices aren’t able to put out multichannel through USB?

The DAC should work under Linux, but it seems that the current firmware is the problem.

[wklie (Peter Lie)]

Lumin input (network streaming and file) and output are stereo only.

[wizardofoz (Mr Fix It aka The Wiz)]

The Okto Dac8 Stereo ships with a RPi4 and Volumio, I have one running ropieee on it and it works fine but that’s for 2 channel. It also works fine IIRC on my Nucleus via USB too without the rpi

Can’t help on the Dac8 Pro sorry

[Tim_Woodward]

Hi Peter @wklie - I would say that is pretty much what I did, except either the Test i/step 4/Test iii/step 4 and Test ii/Step 3 would have been the following day. So either I would have switched off the Lumin into stand using the app or let it go into standby on timer, but either way I wouldn’t have tried to play anything from Roon till the next day. I don’t worry now, as Roon has a standby button on the volume menu for the Lumin I use that - maybe it isn’t an issue anymore, it’s been a long while since I’ve used the app to enter standby mode?

This is because I like to leave the Lumin on all day ready for playing and don’t really want a timed standby situation - however, a timed front display off would be great!! You know, a display that comes on when you play something and goes off after a certain amount of idle time - but only the display, no standby of the actual device. But for all I know, that’s perhaps what standby does!

[dtich]

@wklie fyi, to follow up:

i’ve had the Lumin app timeout set to ‘never’ and Roon device setup timeout set to ‘1 hour’; the device generally sleeps as expected, but the wake-up issue - press play to zone, unit wakes but does not play; second press of play, unit plays back fine - persists.

thx!

[Jerry_B]

Good day

Use my mini with windows and would like to ask is there an app for Mac. Thinking of purchasing an M1 thanks.

I know there are apps for IOS and Droid

[wklie (Peter Lie)]

If you use Roon, Roon (remote) are available on all platforms you mentioned.

If you use the Lumin native app, the iOS app version can run on Mac M1.

[wklie (Peter Lie)]

@dtich

i’ve had the Lumin app timeout set to ‘never’ and Roon device setup timeout set to ‘1 hour’; the device generally sleeps as expected, but the wake-up issue - press play to zone, unit wakes but does not play; second press of play, unit plays back fine - persists.

Firmware sent to you, @Tim_Woodward and @2muchgear . Please check.

[Tim_Woodward]

I don’t seem to be having the issue anyway now Peter thanks… I let Roon take care of standby situation and all works as expected… plays from standby without intervention…

[yagi]

If I have “Enable MQA core decoder” on in Roon (MQA Capabilities default “Renderer only”), in the Lumin APP do I want to have the MQA Mode setting on “passthrough” or “off”?

[wklie (Peter Lie)]

It’s recommended to keep it as default MQA Digital output mode. If you really want to reduce the minimal processing for MQA Core, then turn it off.

[Tom_Wu2 (Tom Wu)]

Has anyone compared U1 mini to opticalRendu in terms of SQ?

[Vadim_Lvov (𝐋♥𝐗𝐌𝐀𝐍🎼)]

Lumin surpasses all Rendu in sound quality very significantly. Not to mention functionality, reliability and a high level of support. At the moment, Lumin is the best! Don’t even think about something else!