Best affordable Linear Power Stage

You're going to have a very hard time beating any of the Sengterbelle R-Core power supplies on Aliexpress at anything remotely close to the price and probably at 3-4X the money. I read somewhere online that there is a UK audio retailer simply marking them up and selling them for around 400 GBP. 

R-Core like the Allo Shanti so extremely quiet with digital gear and benefits from a good power cord and DC cable (which are also ridiculously cheap on Aliexpress). 

I own 3 of them, 2 5V and a 12V for my modem/router. That one may have been the least bang for the buck but the two 5 volts I have here on a Topping E30 MK II DAC and a Wiim Pro + as a streamer only have been a huge bang for the buck and both directly compared to a less expensive Talema torroid based 25W power supply. I was really surprised at how much it elevated the performance of the Wiim as streamer only. 

https://www.aliexpress.us/item/2255800739878853.html?spm=a2g0o.productlist.main.2.4602q0IXq0IXoR&algo_pvid=ebc6e5de-591d-47f3-a8dd-8b269e4edf79&algo_exp_id=ebc6e5de-591d-47f3-a8dd-8b269e4edf79-1&pdp_ext_f=%7B%22order%22%3A%2282%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21USD%2198.00%2198.00%21%21%2198.00%2198.00%21%402103247917433884451453150ee8fa%2112000038789771359%21sea%21US%21701030016%21X&curPageLogUid=b0Ovwh0Uv5oK&utparam-url=scene%3Asearch%7Cquery_from%3A

Just for future reference, you could not use the 15V version as linked to by @tyray with both the Laiv DAC and uDDC. Yes with the DAC but no with the uDDC as it is a 5V device and needs the 5V LHY specific to the uDDC as per the Vinshine website. 

The 5V LHY can also be ordered for $100 U.S. from Aliexpress which would make it even better value ;)

The Sengterbelle is still the one to get IMO.  I have a Talema based LPS like the LHY here to compare (it was the first LPS I purchased) and that one has been relegated to a secondary system, although it is still a nice improvement over no LPS, a power brick, etc. 

The Sengterbelle can also be purchased in dual output for a few bucks more should one want to go that route. But you're going to want the 2nd device to not be very power hungry typically in that situation. I'd rather just have two singles and be overkill on the power supply at the price of these.  

Same power supply tyray. The only difference is the 2nd output connection on one is USB A versus the standard barrel connector. You can purchase power supplies with both outputs barrel connectors or both USB as well if you search. 

Different Ali sellers will have different prices (and often slightly different descriptions). You simply need to shop around on the site for the same product. 

knownothing: I am certainly no expert but google is your friend here. The argument is that R-Core, especially if isolated in a different chassis as it will be with an outboard linear power supply, will be quieter and perform better. The disadvantage, when compared with most torroids is size and weight, which again, is less problematic with an outboard as opposed to a built-in power supply. 

As with all things audio, there is rarely universal agreement but as you say it is a pretty insignificant experiment to try out the Sengterbelle I linked to. It was a fair bit better than a slightly less expensive Talema torroidal based power supply that I also have here on my DAC and astonishingly better on my Wiim Pro+ as a streamer only, which certainly flies in the face of logic with the "bits are bits" crowd. 

Here's a couple of links to discussions on other forums and I'm sure there are others. In any event to say I've been happy with the Sengterbelle's would be an understatement. If it doesn't work out for you, you're out $100. ;)

https://www.stereonet.com/forums/topic/55835-why-a-torroidal-instead-of-an-r-core-transformer-in-digital/

https://www.diyaudio.com/community/threads/toroid-and-r-core.228096/

John Curl also, for example, seems to have a preference for R-Core, so I figure that's probably not a bad thing?

"from Alvin at Vinshine, the DDC version is 5V 2A vs 3A for the regular 5V LPS. Similarly 15V 2A for the micro DAC."

Not really sure that I get this and (maybe I’m just cynical...) have to admit I’m a bit skeptical on it as the 3A "standard" versions would work fine with the LAIV uDDC or DAC in the 5V or 15V respective "standard" versions of the  LHY power supplies. 

On top of that a 3A version vs. a 2A version would be more "future proof" in terms of being able to be used in the future with different 5V or 15V components requiring the ability to deliver more power and would seemingly offer better value at the same price. 

Thanks. I'll be curious to hear your feedback.