Audio Horizons TP 2.0 Preamplifier

I am currently using a McCormack UDP-1 universal player and mostly listening to my Joseph Chow modified Citation Eighteen tuner. I'm presently experimenting with power cords on my monoblocks. I will be doing an interesting tweak on the preamp soon, so I'll let everyone in when it is finished. Joseph has approved of this experimental tweak, so it will be an interesting experiment. Stay tuned for updates.

Sherod,

Look forward to any "improvements" you or anyone can offer. This is alot of fun.

Sherod
I love mysteries. I am guessing that he approved adding a bunch of damping material to the chassis. Any one else have a guess?

La45 I noticed improvements as mentioned in the first few days. But I also recommend leaving it on 24/7 playing a continuous CD source with amp off. After one week of this (168 hours) I noticed another leap in performance - thats when the big grin: "I know with certitude that I am keeping this preamp and it was worth every penny" happened for me.

My Siemens CCa's for #1&3 and gray plate early 60s 88cc's for 2&4, plus Herbies tubes dampers were installed today. I am ready to do some fun tube comparing. As I am new to tube rolling and I expect the diffences to be subtle, do any of you have suggestions on what to listen for, what music to use, how to AB compare etc?
My plan so far is to let them warm up for a hour but given they are all used tubes, start the project without a major breakin period. Also to use pieces like solo flute to check the body and harmonics of notes, and to use my other standard musical selections that I employ for comparing equipment. Any other hints, specific to tubes? Thanks. Joe