I tried out a =C= Svetlana retube last night:
Carvin DC-127 (Maple neck-thru, maple cap, poplar wings) with Carvin's higher outpup p/ups
-> NS-2 -> TS-9 (Analogman 808 mod) -> TU-2
-> Einstein with =C= EL34s -> Framus cab w/v30s
The tubes make a massive difference. Seriously.... **** me....
NOTES: 1) The guitar is fairly bright and responsive, the pickups are quite nice, reasnable output and not as tight as BKPs 2) I didn't use the TS-9 much, when I do it's to roll ack the bass and add a bit of gain & top end harmonics.
Clean sounded very nice, esp with neck p/up tapped it was very 3D. Mode 3 (mega) is now un****ingbelievable. Very fast response and I can use more gain then I could before I retubed and still have clarity. Both death metal and stoner type riffs sound equally good - a first as I've not been able to do this on the same channel with the same settings before!! I use the lead channel for more saturation rather then for lead playing as such, this is also tighter without losing it's depth. Feedback is fully controllable, mmmm...
Very, very impressive, and I was impressed by the amp already. I'll be using these power tubes from now on, no question AT ALL. My Einstien loves them.
EDIT: FWIW last week I was using my Mesa Dual Recto as I was too lazy to take the Einie to the studio. That was a mistake. This amp blows the Recto out of the water *completely* now. Unreal. The Recto previously had the edge on low end and aggressiveness, but that's not so much the case now as the SEDs give you a lot more to play with!