Audio Horizons TP 2.0 Preamplifier

in the event one would like to upgrade the stock tubes without purchasing them from the manufacturer (as in I already have a new unit delivered on Friday) what tubes and from where should I be looking?

please confirm that the current preamp does in fact invert phase as there is no mention of this fact in both the ads here or on the website...

Rob, welcome to this thread and tothe club. Curious - did you reverse your speaker leads???

Well I haven't compared the AH to a Ref 3 but I have compared it to a Lamm L2 Ref - the AH was returned. Its a very nice preamp and a great value at its pricepoint but unlike everyone else here it just didn't float my boat. My next audition will be the ARC LS-26.

Source is a Sony xa9000es for SACD and a transport into an Audio Note DAC 2.1x for redbook. Amp is a Bryston 14B-SST. Speakers are Talon Audio Ravens. Treatments are minimal with Eighth Nerve response treatments.

The AH was burned in 24/7 over 3 weeks with a tuner signal running through it (when I wasn't listening to it) and I have three 20A dedicated lines one of which is allocated to the preamp.

The following preamps were recently in my system; Lamm LL2 deluxe, Hovland HP-100, Bryston BP-26 and Lamm L2 ref. The AH is a very nice preamp and certainly a huge value as it ran very well agaisnt the Hovland and "baby" Lamm. As for the Lamm L2 ref it just brought more to the party - better dynamics, deeper soundstage and more detail/realism than any other preamp thats been in my rack.