A relatively low-cost pc that brings an extraordinary organic (but 100% neutral) quality to Solid State amplifiers is made by Luna Cables. They were all over the recent Montréal Audio Show. For almost a year now I have used their $1200 entry-level orange PC on my solid state amps and/or integrateds in a cable loom where the next cheapest cable is $7k (please don’t judge). My gear was mainly Luxman (from 590x, to mononlocked m-600s, to m-900u) with a few other brands brought in for auditions. Anyways, this pc is remarkable in this use. I found most other PCs changed the balance or essential sound profile of the amplifiers. The company Luna has a kinda “organic, all-natural” philosophy and I find it really comes across in this PC. Helps the amp just be better at what it does best in an organic / liquid way. Good luck with the search.