Linear power supply

Mid-tier?  Wait until you tune into 7:45 of this review by TAS!  Essentially, the host is saying the $35k combo of a $28k DAC and highly raved Aurender N200 here sounds better than ICON but the difference is subtle.

https://www.youtube.com/watch?v=MMpXGuG8DCw&t=141s

Also, other companies may have been working on developing it, but so far, Teddy Pardo seems to be the first and only vendor offering an LPS mod for the ICON.
 

+1 Small Green Computer!

If you want the best in class then Linear Tube Audio

if ordered on Audiogon $700 and the build quality  alone class leader up to $1200

and comes with a great DC cable most charge $150 for.

I added the Teddy Power to my Eversolo DMP-A6 Master. I honestly wasn’t sure what to expect, but it far exceeded anything I could have hoped for. On top of a cleaner, more full bodied sound, it added a level of depth and space as well. Worth every cent! Even though I already had

I actually have the Icon in my second system and didn’t know TP had the PS for Icon (thanks @lanx0003). Going to look into that now!

Finishing first paragraph above- even though I already had the Eversolo going to a DENAFRIPS Hermes to a PONTUS II 12th DAC. The TP power supply still took performance to another level…