Thank You Tom Thiel
Dis-satisfaction with any component can be the result of
incompatible synergy , your knowledge and insight of the Theil speakers
has at least given owners or future owners some information on what to look for in a power amp .
dsper
I got back into a home audio system about 10 years ago by purchasing
my dream system from when I first read about it in the 1980's , the 30 year old pre-amp was noisy even after re-capping , so after I purchased a separate phono pre-amp and I started to think about a passive preamp
with the thought that less is more . So I now have a 2 input 24 step volume control passive preamp and couldn't be happier with the sonic result , my all tube phono preamp and my CD player with built in buffer tubes are basically plugged into the power amp with just a couple of resistors on the volume control in-between .
You have experimented with a lot with tubes , fun but expensive and getting more so everyday , but as you said it's easier and less expensive than changing out components .
I had just replaced the stock 12AU7 with a new Gold Lion the is balanced and cryro treated and am loving it .
I tried an older 1960 RCA gray plate , and a few other tubes that I borrowed to listen to , a Telefunken and a Baldwin.
I think that I will stick to new tubes
with the hope that like vinyl more will be available as time goes on.
Happy Friday
Rob