Add a Linear power supply or iFi SPDIF Purifier2?

How many volts ? Please keep in mind you have to know the amp output also 

go to small green computer . Ijust put anice lps on my new modem router combo  the power supply made a Big difference the music has much  better image densitt and focus. My new 8702 Motorola has a much better 4 core processor andBig memory buffer and verygood wifi ionlyuse for control ofthe tablet ,

a huge upgrade alsoistheSonore Ethernet toFiberoptic  the Sonore deluxe is $500 each , for now youcan get one and just add LPS  to them noise cannot travel over fiber optic much cleaner then wire , 

I put a reclocker between my computer and DAC and also used a linear power supply for computer. For me, the reclocker was a bigger upgrade; in this case Singxer Su-6. After looking at all the LPS on Aliexpress, I went with the HD Plex 300W LPS that provides 19V, 12V, 5V, and adjustable voltage. 

If looking for an LPS, LHY Audio is a decent brand from China. I used one for many years and it works very well. Quite a lot of tech inside too.

https://www.aliexpress.com/item/1005001795236295.html

Yes, Alvin of Vinshine (Denafrips), also brings in this brand of LPS.

+1 @audioman58. Although I do not use the Sonore, I use the same principle in breaking the Ethernet connection with fiber using a tx and rcvr just before the streamer. This has probably been one of the biggest noticeable upgrade tweaks I’ve ever done and it’s under $100. You can get the parts on Amazon and it’s simple to install. Really! I highly recommend this along with your power supply. This should make you forget about a new streamer for a long time. Good luck. 

Yes using fiber optic is the best medium for isolation , the Sonore Deluxe is much better ,I started with just a media converter , the big difference inside there are linear technologies low noise regulators ,choke, and very low jitterFemto clocks 

the $40 ones will work but have high phase noise you should at minimum at the end point spend $499 for the Sonore, Small Green Computer  sells them and has very respectable LPS power supplies the 12 v  model I bought for my rougher is 

6 lbs for $300 is a great buy , these too take about 100 hours to settle in but it is now much clearer ,more depth and the top end bite is gone , after theLPS  the aftermarket  DC cables and a inexpensive pangea powercord , these tweaks add another $1k to the mix ,I have 3 LPS for the 2 Sonore deluxe media converters , and forthe New Motorola 8702 modem-router ,with the much faster 3.1 Docsis technology Big sale on AMA         Zon.