Audio Horizons TP 2.0 Preamplifier

Welcome, Rhanson to the TP-2.0 preamp club. I just received a detailed explanation regarding the phase from Victor. I asked him if I could post the explanation on this thread and am awaiting his reply. I just reversed my speaker leads and the sound became out of phase, so the standard hook-up is in phase for my system. It might be different for others. Victor's explanation talks about this issue. Don't worry, because I just did a detailed search on the threads discussing phase and there is a lot of information. I'll find the thread that helped me a lot in understanding this phenomena. If you read the posts, you'll see that a lot of studios record the songs out of phase.

Hey Rob,

Glad you joined, welcome here !!

Here's one thread that gives some info. Do a search under "phase inversion" or "phase". Other words to look at are "inverse polarity", "polarity" and "reverse polarity"

http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1143621906&read&keyw&zzphase=inversion

Not sure why one system does not require cable switching and another does. The preamp does invert phase and my system is out of phase unless I reverse polarity on the speakers. I just confirmed this on my test CD.

Unless another piece of gear inverts phase in the same system one must reverse polarity - right?

Bill

Welcome Rhanson. Enjoyed your sense of humor in your post. Are you willing to share what pre you replaced, on or off post? Interested that you like the Amperex.

Sherod, The Siemens cca's I tried in position 1&3 were microphonic in my system. I tried Herbies tube dampers and they seemed to dramatically overdampen the sound and put me from row 4 concert hall to row 14.
I am leaning next to trying a matched quad of NOS gray plate early 60's Siemens E88cc's, but have not ruled out Amperex yet.