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I have no idea myself, and I'm not sure how someone can say a percentage of such a difference, but here's a quote I found that might give an idea about it...

 

"The stock Lumin U1 Mini provides 60% of the performance of the U1 for 34% of the price. The upgraded U1 Mini provides 80% of the performance of the U1, for 42% of the price."

 

Search for Lumin in the middle of this page for the whole thing.

 

http://enjoythemusic.com/Montreal_Salon_Audio_Fest_2019/part2/page4.htm

 


Streamer: Lumin U1 Mini (Paul Hynes SR4T), DAC: LampizatOr Amber III, Amplifier: Ypsilon Phaethon, Speakers: PMC Fact.8, Other: Ansuz cables & power distribution. Sablon Audio 2020 USB.

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I was told by Upscale Audio, who sell both models (and are the distributor for SBooster), that the difference is very small.

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I believe can now answer this question a bit better...

 

First, let me just say that I'm a big Lumin fan, I've owned both the D2, T2 and now U1 Mini and been nothing but super happy with all of them. Adding a better power cable and making sure you have clean power is a first step for a good improvement to them and I think they're all performing great in their leagues without any DIY hacks.

 

For the U1 Mini I couldn't resist doing the "Sbooster modification", although I felt that if I was about to do this then I wanted to use something a bit more "reputable" and more well accepted in the PSU domain, albeit maybe also more expensive. I decided to go with the brand new Paul Hynes SR4-12 Turbo. I found that Audio Sensibility in Canada is modifying the Sbooster kits to have a more standard 2.1mm DC connector instead which suited my intentions perfectly.

 

Please note that this voids warranty and is nothing that I recommend doing. If anyone burns your Lumin the responsibility is yours and yours only.

 

image.thumb.png.3086b473494bc8ea92aadd56d8c95ad1.png

 

With that said and done, how does it sound and how do it compare to the larger U1? To clarify, I still haven't heard the U1 but I would like to describe the changes like this.

 

At first I was a bit like "ok, maybe a slight change but nothing special", but let that Paul Hynes PSU get warm, give it 1-2 days and the improvement will not be subtle anymore, in fact, I would say that there is nothing about this U1 Mini that can be related to being "mini" anymore, this baby has grown up! I do hardly recognize it anymore, the overall improvement in all aspects is substantial, it sounds big, thunderous and magical. I'm impressed!

 

I referred to a link above where it claims about 25% improvement with the Sbooster, to be honest, that number seems very low to me.


Streamer: Lumin U1 Mini (Paul Hynes SR4T), DAC: LampizatOr Amber III, Amplifier: Ypsilon Phaethon, Speakers: PMC Fact.8, Other: Ansuz cables & power distribution. Sablon Audio 2020 USB.

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@rikard did you have to cut any wires to install it?

 

interesting you state that Sbooster is not reputable or well accepted. They’ve been around for long time and I’ve read nothing but good stuff about them. Even owned sbooster with ultraRendu and it was better than an uptone LPS I used. 

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1 minute ago, Kray said:

did you have to cut any wires to install it?

 

Yes, unfortunately. But totally worth it and no regrets or going back.

 

My wording about Sbooster was a bit clumsy, I apologize for that, I've heard nothing but positive things from people using them for this upgrade as well, and I did not compare.


Streamer: Lumin U1 Mini (Paul Hynes SR4T), DAC: LampizatOr Amber III, Amplifier: Ypsilon Phaethon, Speakers: PMC Fact.8, Other: Ansuz cables & power distribution. Sablon Audio 2020 USB.

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29 minutes ago, hpfish said:

Can I use my UpTone ultracaps 1.2 with modified LPS kit for U1 Mini?  

 

I'm afraid the LPS 1.2's output current is a bit on the low side. The original SMPS in the Lumin gives 12V/2.1A, Sbooster 12V/3A and Paul Hynes 12V/2.5A whereas the LPS 1.2 only does 12V/1.1A so I don't think it would be a good idea.


Streamer: Lumin U1 Mini (Paul Hynes SR4T), DAC: LampizatOr Amber III, Amplifier: Ypsilon Phaethon, Speakers: PMC Fact.8, Other: Ansuz cables & power distribution. Sablon Audio 2020 USB.

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@hpfish I've got the 12V model.


Streamer: Lumin U1 Mini (Paul Hynes SR4T), DAC: LampizatOr Amber III, Amplifier: Ypsilon Phaethon, Speakers: PMC Fact.8, Other: Ansuz cables & power distribution. Sablon Audio 2020 USB.

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