Reasonably-Priced Linear Power Supply for WIMM Pro Plus Streamer

Look at Topping LPS.  I have a couple WiiM + Topping DAC’s with Topping LPS.  Works great, sounds good.  My ref set up higher end streamer, DAC, LPS but more resolving amps and speakers.  

The issue with the Topping LPS is twofold (no offense intended). First, it generates a lot of heat. Second, its maximum output is limited to 1A—seemingly enough for a WiiM or most DACs, but lacking the headroom to handle dynamic peaks. I tried it and returned it. Ideally, one should look for an LPS rated at least 2A.

I would get the Teddy Pardo and don’t look back. I use one with my Bluesound Node X and it’s exceptional.

There are many ways to spend an exorbitant sum for a linear power supply, but it's unnecessary. In a recent YouTube video, "Gabster" demonstrates measurements for various linear supplies, with the inexpensive Studer 900 clone performing exceptionally well for the money, demonstrating excellent voltage regulation with an impressive <1μV of ripple.

The "Studer 900" LPS in the link below can supply at least double the current of the OE 5V/2A unit supplied with the WiiM Pro Plus, and is around $100 delivered, USA tariffs included. I have used this with both a WiiM streamer and Geshelli Labs J2S DAC and have been 100% satisfied with the performance as compared to noisy OE wall warts.

Studer 900 Circuit LPS

@ted_b

Yes, I have extolled the virtues of these R-core power supplies here before (I have 3 of them, all 50W versions here, so a few more dollars (maybe $20-$25) than the one you linked to. Overkill for a Wiim Pro + or a Fiio K11 R2R which is what I'm using 2 of them on? Perhaps, but the proof is in the listening. 

They are grossly superior in terms of build quality and sound quality to something like the LHY LPS15VA, which is a toy by comparison. Yes, that will give you some improvement in sound quality but nothing like the LPS that Gabster tested and you linked to and I also own. 

You will not regret going overkill on a power supply like this and, as you say, it does not need to be a costly exercise. 

Good quality power cords are also important here (Preffair 503 with copper connectors on Aliexpress is outstanding) as well as a quality DC cable from the LPS to the DAC or streamer. $25-$35 will get you a very good silver plated copper or even all silver DC cable (USB C to fit the Wiim if you like) from someone like KAM Audio in HK that will also be a marked improvement over the giveaways that generally come with these power supplies. 

So pretty easy to come in with something very, very good all in for around $200 U.S.