Audio Horizons TP 2.0 Preamplifier

now that ive tried the above tubes and volvo/amperex e188cc along with my 64 ccas and others no doubt they all have there own character and sound. the ccas are more thin sounding compared to the e188s while the amperex have better bass and mids IMO. in the end i believe until you audition a verity of tubes in AHs preamps you may be missing sound that appeals to you better. like finger prints and ears we are all different and what sounds better to me may sound like crap to you. i'm sure most of you have taken the time to experiment on your own and already know its worth the trouble and expense for better sound.

You are right on about experimenting with different tubes in the AH preamp. I just bought a pair of older(1958) Amperex e88cc I am going to experiment with. I found that so far my preamp sounds best with a pair of early 60's Siemens Cca in locations 1 and 3 with a pair of early 70's Siemens A-frame e88cc in 2 and 4. All Cca seemed to be too smooth, lacking in spatiality and air. The AH preamp also responds to power cords. No matter what power cord I try on the preamp, I can hear the difference, for better or for worse. Also, Victor just informed me in an e-mail that Joseph will be announcing this next year a new tweak for all his preamps. Stay tuned for an announcement soon from one of his Beta-testers. I don't know the details of this new tweak.

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.