[thingswelike]

Hi; just received the Lumin U2. It is connected through SFP and coax. When listening Qobuz/Tidal i do hear from to time at the start of music change a loud click/pop. Is there a way to avoid this behavor?

This is not something normally found with LUMIN. In case it's a known compatibility issue with your DAC, I would email info@luminmusic.com for some more help.
Let them know your resampling settings, DAC model, connection method and some tracks where you can repeat the sound.
If it's whenever the sample rate of the music changes (i.e. going from redbook to high-res), then one solution might be to use LUMIN to upsample everything to the same rate so that the DAC doesn't have to change anything. But the support team will know a lot more than me.

Just so people know - I'm separate from the main Hong Kong team and based in the UK which is why I'm often not completely in the loop when it comes to support issues.

 

[xmitHIFI]

This is not something normally found with LUMIN. In case it's a known compatibility issue with your DAC, I would email info@luminmusic.com for some more help.
Let them know your resampling settings, DAC model, connection method and some tracks where you can repeat the sound.
If it's whenever the sample rate of the music changes (i.e. going from redbook to high-res), then one solution might be to use LUMIN to upsample everything to the same rate so that the DAC doesn't have to change anything. But the support team will know a lot more than me.

Just so people know - I'm separate from the main Hong Kong team and based in the UK which is why I'm often not completely in the loop when it comes to support issues.

You are right and fast!! You found the reason why it happend (tested right now..). When in Tidal, playing high quality song, all ok. When i do select the MAX quality title between the high quality songs then the pop do happen every time; congrats for finding the reason.

Now the question is how to solve it. I do have chord mscaler and dave in chain. So upscaling in Lumin would be a solution, but @Rob Watts did write in a thread, that there should not be any upscaling done before mscaler, otherwise the SQ will decrease..

 

[dpeterfy32]

You are right and fast!! You found the reason why it happend (tested right now..). When in Tidal, playing high quality song, all ok. When i do select the MAX quality title between the high quality songs then the pop do happen every time; congrats for finding the reason.

Now the question is how to solve it. I do have chord mscaler and dave in chain. So upscaling in Lumin would be a solution, but @Rob Watts did write in a thread, that there should not be any upscaling done before mscaler, otherwise the SQ will decrease..

what sfp are you using? switch, adapter, cable

 

[xmitHIFI]

what sfp are you using? switch, adapter, cable

Switch Ubiquiti USW 16 PoE and the SFP is Ubiquiti OM-MM-1G-D. Cable also ubiquiti

 

[dpeterfy32]

Switch Ubiquiti USW 16 PoE and the SFP is Ubiquiti OM-MM-1G-D. Cable also ubiquiti

why did you choose this? do you hear a difference in sound quality compared to a standard ethernet connection? if so what?

 

[xmitHIFI]

why did you choose this? do you hear a difference in sound quality compared to a standard ethernet connection? if so what?

I did have the ubiquiti, so i did took the ubiquiti switch and sfp from the same company, to have less problems.. the U2 is new, so i did no playing with different configs..

 

[thingswelike]

Chord Dave is a common DAC for partnering with LUMIN, so I would be surprised if the support team hadn't already got some information to help. It can take a couple of days to get back to everyone, but now that you've got a little more info, that should help. It might also be worth asking Chord.
BTW - have you tried USB?

 

[xmitHIFI]

Chord Dave is a common DAC for partnering with LUMIN, so I would be surprised if the support team hadn't already got some information to help. It can take a couple of days to get back to everyone, but now that you've got a little more info, that should help. It might also be worth asking Chord.
BTW - have you tried USB?

i did mail to info@luminmusic.com and did receive a fast answer. peter is proposing to take usb. for me this also quit difficult, because right now i can use just one arm and so i cant change the config.

 

[thingswelike]

i did mail to info@luminmusic.com and did receive a fast answer. peter is proposing to take usb. for me this also quit difficult, because right now i can use just one arm and so i cant change the config.

I'll leave you in the capable hands of Peter
Here's to rapid healing on your second arm!

 

[devilboy]

Every once in awhile I hear a pop sound coming from one channel. I use the internal DAC of the T3. I haven't noticed if it was during changing of sampling rates.

 

[dpeterfy32]

Is there a difference in sound quality between the coax and AES outputs of LUMIN U2?

 

[George Hincapie]

Have any of you directly compared the U2 to the Rose RS130? Very similar in terms of features and price. I have no direct access to either, so would like some owner feedback please.

 

[alekc]

Have any of you directly compared the U2 to the Rose RS130? Very similar in terms of features and price. I have no direct access to either, so would like some owner feedback please.

@George Hincapie as far as RS130 is concerned I'd take a look at this post first: https://www.head-fi.org/threads/totl-disappointments.925164/page-61#post-17899729

Have no first person experience with any of Rose products. As for Lumin I still love my U1 Mini, while it seems that other streamer vendors applications are catching up or are even a bit better. Hope that helps.

 

[George Hincapie]

@George Hincapie as far as RS130 is concerned I'd take a look at this post first: https://www.head-fi.org/threads/totl-disappointments.925164/page-61#post-17899729

Have no first person experience with any of Rose products. As for Lumin I still love my U1 Mini, while it seems that other streamer vendors applications are catching up or are even a bit better. Hope that helps.

Thanks so much, I'll have a look.

 

[markush8]

Does someone know when LUMIN will finally add HQPlayer / NAA support? This has been long awaited and also cheaper vendors like iFi ZEN stream or Holo Audio Red etc are supporting it.

@thingswelike got an idea?