Hi hypnos 1,
The Elise has almost 100 hours on it now, so I guess that it should be burned in by now. I really like this amp, and that is the main thing.
At this time I have overdosed on tube rolling, and I am just going to enjoy listening to the supplied stock tubes for a while. Tried a combination of my unsung heroes RCA 6SN7GTB 1965/67 with the top heater wire together with the 1958 Chatham 6AS7G. This combination was quite nice. The RCA were not as sweet as the Tung Sol 6SN>B reissues, but the Chathams had more punch in the bass than the 6H13C tubes.
Don't worry, I haven't given up on the C3gS tubes; for sure they are more resolving than the TS tubes - I just have to find the right power tubes to pair them with. Have a pair of RCA 6AS7 and various 6080 tubes to try, and some 6BX7and 6BL7 as well.
As you know, there is a vast pool of Elise owners out there, and I am sure that interesting tube combinations are going to be suggested. My amp, which just was delivered, turns out to be serial #9 based on well informed insider sources.
All jokes aside, this is a serious amp, and I am sure that as it's reputation picks up, many more people will buy it.
Cheers,