Audio Horizons TP 2.0 Preamplifier

If anyone is still experimenting with tube rolling in their TP 2.0 preamps, in my system I've yet to find a better tube for locations one and three than an early 60's Siemens Cca, but I recently bought a NOS pair of 60's Siemens E88CC with the A-frame halos and put them in locations two and four and the combination is really musical. The A-frames seem to have a larger soundstage with a little more airiness. This combo sounds better to me than all Cca's in the four positions. Here are some similar A-frames to the ones I found, except mine are date coded A3, while these are A6:

http://cgi.ebay.com/NOS-Siemens-JAN-6922-Matched-Pair-Gold-Pin-E88CC-7308_W0QQitemZ320143186035QQihZ011QQcategoryZ67816QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
I'm still experimenting with output caps but for the time being I am back with the original upgraded Hovlands. I'm going to try two more caps and then make my final decision. Happy listening everyone. I hope you're enjoying your systems.

I don't know if anyone has noticed this, but in the new TP 2.1nB, Joseph has removed the AC filter. I'm curious about this as the filter was an original add-on upgrade in the 2.0 versions.

http://161.58.252.3/i/s/f/1186200477.jpg

Gentlemen,
This has made for an extremely interesting three hours of reading today (which just happens to be a very hot, humid, rainy day). Since I’m in the market for a preamp for an analog system I’m putting together, I’m going to have to give this Audio Horizons preamp a listen to.
Thanks for your posts.

And why not complete your reading by enjoying the music by "Tesla" found on "My space".

The link :http://vids.myspace.com/index.cfm?fuseaction=vids.individual&videoid=11324008 is shown unless AG removes it.

I wonder if the TP2.1 would improve the music quality of Tesla? Seem a bit bass shy!