I’ve been a tube guy since the early ’70s. Lots of high quality tube amps over the years. Have been using Lamm ML2 SET amps since around 2006 in a chain that is all tube, from phono, to power supply, to line stage, to amps. I use NOS tubes throughout.
I’ve been considering a back up, especially for summer (it gets a tad hot here in Central Texas) and I want to minimize my tube consumption (the big Russian triodes aren’t hard to find, but getting pairs that work in the amps requires me to buy them through Lamm).
One low powered SS amp (mono blocs) that is supposed to be a contender is the Valvet. It doesn’t get a lot of publicity, but the company has been around for a long time, the amps are made to a high specification in Germany. Worth a look if you you are considering a change from tubes. (I don’t expect these to have the same magic as the Lamm SETs but from folks who are familiar with the sonic signature of both, the Valvet is considered a real contender in SS). There is a US distributor who has handled the line for a while.
Good luck. I remember Quicksilver from ye olde days-- a well regarded brand. Though tubes can be a PITA, they are often pretty simple to have repaired.