Lumin, Leedh’ing the way

Anwo said:
I did the factory reset and enabled volume control again. Still no volume control via USB out (Oppo UDP 205 connected on Lumin U1 Minu USB 1). I also tried via coax connection, and hey, Lumin connected via coax and now the volume control does work. Back to USB and volume control does not work again.
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Earlier I tested volume controlled USB output to be working in my test setup, and another user also confirmed it to be working for him. So that's very odd.

Which firmware of UDP-205 USB DAC are you running? In UDP-205: Setup Menu and then Select the "Device Setup-> Firmware Information->DAC Version".

You are not playing MQA music, are you? MQA requires the DAC to process the volume, so the U1 MINI as a certified MQA transport will leave the digital stream alone when a USB MQA DAC is detected.
 
LUMIN - Audiophile Network Music Player - Page 100 - Networking, Networked Audio, and Streaming - Audiophile Style
In my test I was playing back vinyl that had been ripped at 24/382 with an RME ADI-2 Pro ADC. I first played them in my normal mode (Lumin [A1] - TRL Dude Pre - TRL Samson amps - Green Mountain Audio C-3 HX). Then I re-cabled to remove the TRL Dude Pre. All the cabling was Silent Source. I need to do more testing but my initial reaction was that there was more clarity and detail and also more body to the instuments and more dynamics with no apparent trade-offs so far (other than being limited to one source input.).
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Re: Leedh Processing Volume free upgrade

thingswelike said:
You can choose whether to use it or not.
Scenario 2: You adjust volume with LUMIN, set your pre-amp to unity gain (you could probably find out from the manufacturer what this is) and leave it there. In this case you would be using the new Leedh Volume Control in LUMIN.
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..you mean to adjust volume with the "circle control", the master one?
Then let to "ON" both controls in option (APP) : volume control and Leedh processing volume?
In this case the LEEDH is running?

Why you wrote: "if the Lumin volume is set to 100 LEEDH will be not running?

Thanks.
 
Peter, would there be any way to use a Bluetooth Remote to control the volume on the Lumin’s? The one thing I didn’t care for when I paired the X1 and amp was having to use the volume control in the app. I have to grab the iPad, unlock it, click on Roon, wait for it to do it’s thing, then adjust the volume. By then, I’ve been blasted by 20 seconds of highly compressed music. I’m a preamp kind of guy, but with a Bluetooth Remote (the kind they sell on Amazon), perhaps it could work.

Thoughts?
 
On the iPad i hade to delete the app and reinstall before i got the Leedh option, on the iPhone all what good from the start.
Thanks for god produkt
 
Hi Peter, I’m using U1 mini may I know how does the Leeching processing work on the network transport if there is no internal dac like T2 or A1? Thanks
 
Re: Leedh Processing Volume free upgrade

Luca said:
..you mean to adjust volume with the "circle control", the master one?
Then let to "ON" both controls in option (APP) : volume control and Leedh processing volume?
In this case the LEEDH is running?

Why you wrote: "if the Lumin volume is set to 100 LEEDH will be not running?
Click to expand...

Yes and Yes.

Leedh is a digital volume attenuation algorithm. At max volume there is no need to attenuate, and therefore no need to use any digital volume algorithm.
 
Mike said:
Peter, would there be any way to use a Bluetooth Remote to control the volume on the Lumin’s? The one thing I didn’t care for when I paired the X1 and amp was having to use the volume control in the app. I have to grab the iPad, unlock it, click on Roon, wait for it to do it’s thing, then adjust the volume. By then, I’ve been blasted by 20 seconds of highly compressed music. I’m a preamp kind of guy, but with a Bluetooth Remote (the kind they sell on Amazon), perhaps it could work.
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I'll relay your suggestion to our team, but iPad has always been the remote for Lumin.
 
wklie said:
I'll relay your suggestion to our team, but iPad has always been the remote for Lumin.
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Thanks. iPad is clunky. I would suggest a Bluetooth option at least. You can buy a nice Bluetooth remote on Amazon for $20.
 
hatateru said:
Hi Peter, I’m using U1 mini may I know how does the Leeching processing work on the network transport if there is no internal dac like T2 or A1? Thanks
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Yes, Leedh Processing Volume also works on U1 (MINI). In fact it works across the whole Lumin product line of network players / transports. For digital output, the music data is altered by the Leedh algorithm to reduce the loudness. For analog output, we have different implementations of Leedh algorithm for different DAC hardware.
 
wklie said:
Yes, Leedh Processing Volume also works on U1 (MINI). In fact it works across the whole Lumin product line of network players / transports. For digital output, the music data is altered by the Leedh algorithm to reduce the loudness. For analog output, we have different implementations of Leedh algorithm for different DAC hardware.
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Thanks Peter. So what I need to do is to switch the volume control from Off to On under the Lumin app setting? Do you suggest to have a fix volume on the pre or integrated amp and then control the volume thru the app instead to fully use the Leedh processing?
 
Yes, and make sure the Leedh Processing Volume setting is On (default).

As for whether you should use the pre-amp volume or Leedh volume, please do an A/B comparison of SQ if possible and let us know.
 
Lumin U1 MINI Leedh Processing against DAC volume: LUMIN Music - Leedh Processing - Lumin - Roon Labs Community

For now I use the leedh processing on a U1mini with a Ayon Skylla 2 dac and 813 single end tube power amplifiers with Marten Duke2 speakers in a home office. For me the leedh processing give better results in this configuration than the classical digital volume control of the Lumin, and than the integrated volume control of the Skylla 2 dac. Some years before, I used a Ayon Crossfire integrated amplifier with a motorised ladder volume control and connecting the Skylla2 to the Crossfire by the direct input, bypassing the ladder and using the Skylla volume control, gave far better results in transparency (so take care of the preamplifiers and integrated, the bottleneck is often here behind the pleasure of a colored or limited item). Today the leedh volume control give a bit more relaxed presentation with better tone accuracy, better resolution on fine details, increased naturalness in voices, acoustical instruments that seems less compressed, less planed at one end instead of being gradually attenuated over the entire strip with respect of each levels of dynamics.
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With all the precautions and "subjectivities" that an audio system entails in its environment,
I leave - apologizing for my English - what I heard in my system.
Before doing the "direct" test that I think is the most useful for this implementation, and that I have not yet done, my "bottleneck" Ayre (preamplifier that holds the turntable, DAT etc. together) who do not want to know they are left disconnected :rolleyes:) ...
LEEDH equalization (digital volume) "works" I mean that -IMHO- it smoothly/smoothes the very high range in favour of a more "full-bodied" presentation without affecting the "geometry" (stereophonic image, 3D scene ...)
The verb "blunt" / "sweetens" ... in (one) reality ... in revealing systems (loudspeakers) it can be an advantage but also no.
It must be said that in any case sui generiis in digital listening (streaming?) this intervention is almost always an improvement, isn't it?
Here, this is my opinion of the "LEEDH volume" vs the (updated?) Control of Lumin and, perhaps important too, I must add that I did these "tests" with streaming from TuneIn through my U1 mini with Music transmitted in Mp3 (16/44 at only 128 kbps)
Shocked? :disbelief:
Well, you should read more, because if I use the old Ayre (all OFF for digital volumes) then ... there is no (yet) story.
In Colorado they had seen well and above all very far, do not be angry.

Luca :hey:

P.S. If you tell me that this LEEDH doesn't work in MP3, then I go to a doctor :cryforjoy:
 
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wklie said:
Earlier I tested volume controlled USB output to be working in my test setup, and another user also confirmed it to be working for him. So that's very odd.

Which firmware of UDP-205 USB DAC are you running? In UDP-205: Setup Menu and then Select the "Device Setup-> Firmware Information->DAC Version".

You are not playing MQA music, are you? MQA requires the DAC to process the volume, so the U1 MINI as a certified MQA transport will leave the digital stream alone when a USB MQA DAC is detected.
Click to expand...

Oppo DAC firmware version is USB-0118. This makes sense, the Oppo is indeed functioning as USB MQA DAC.
Thanks.
 
After reading through all of the posts, I am still confused. I am currently running my T2 through a Classe Sigma passive preamp. If I try the Leedh, do I keep the Leedh processing volume at 100% and adjust my overall volume with the volume control with the circle around it?
 
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I only have a U1, connected to my DAC to pre-amp then to power amps to speakers.
Pls tell me if I am doing this incorrectly.
After removing my pre-amp, dac is connected to power amp, dac digital volume control is at 100.
In the U1 app:
Volume Control is at ON
Leedh Processing Volume is at ON
Max Volume % is at 100

Exit app, set top side circle volume control to 0
Turn my power amp on.
Start playing a track.
Tap on top right hand circle and slowly increase the volume level.
Am I using the Leedh feature ?
 
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