Audio Horizons TP 2.0 Preamplifier

Sherod do you are any others AH users float your tube PCB. i checked back in the thread and did not read all but thought there was a kit or mention of this. as time when by this tweak slipped out of my thoughts but seems logical. i believe your going to like the Amprex tubes. after a long time enjoying my ccas and then finding out there fate was shot
i' ve been on the tube rolling plan very interesting for sure.

The only float I use(if you can call this a float) is a suggestion that Pat(Rx8man) gave a couple of years ago by using small o-ring gaskets between the screws and the Pcb. I think this is just an isolation rather than a true float. I'm not sure if Joseph is using this method or another type of isolation in his current preamp versions. I use a mix of Herbie's Feet and Isonodes under my preamp which provides for isolation and improved sonics. It's amazing how various feet can change the sound so much. I've read some good things about these Mig cones from Synergistic Research that I might try out some day. I've tried a few o-ring-type tube products that deadened the sound too much.

i'm curious, IIRC tubes 1& 3 are signal gain, but 2 & 4 are for bias. did anyone find benefit from rolling 2 & 4?

Rhyno,
Rolling tubes in 2 and 4 also made a difference to my ears. Joseph told me from day one that 1 and 3 were more critical to the sound, but 2 and 4 also play a role in the overall sonics, IMHO. (o:

Recently I aquired a AH TP2.0. This particular one has no output transformers. Were these transformers offered as an upgrade at the time of its conception?