shkong78 wrote:The Rogue ST-100 definitely looks interesting to me as I said before.
The used ST-100 could be best starting point for you.
If you change stock 12AX7 to Telefuken( around 200$ per pair) and 12Au7 to Amperex NOS (around 120$ per pair), it sound very nice.
Tungsol KT 120 is good and not much choice for tube rolling.
It is not that difficult to adjust bias manually.
Once you do it, it keeps the value for several months or more.
Since I want to get involved manual bias won't be a problem, actually would prefer that.
By the way, did these amps have different generations thru the years? Probably not, but the only thing I see that the user manual from their website was issued in summer 2013.