Audio Horizons TP 2.0 Preamplifier

That is part of the design of the balanced interconnection. They call it common-mode noise rejection. It lowers noise level. It's a more expensive solution because it requires balanced mode output transformers in the preamp.

Here is a link that will offer more information
http://en.wikipedia.org/wiki/Balanced_line

Cedar you da man.

Markwatkiss
Thanks for posting on the upgrades. I am watching feedback on the upgrades very closely because my original AH is so good to my ears that I don't want to ruin it. Sounds like Joseph was able to preserve what we like about the AH and enhance beyond that substantially. I also hear that Nuforce has come up with an upgrade to their Reference V2SE that brings in the good qualities of sound found in high dollar tube amps. Which upgrade to choose amp or preamp? Any input?
Joe

Joe,
Just enjoy what you have now in your system and send the extra money to your kids in college. (o: ( I'm just kidding, okay?)

Gummajo i am going with V3 upgrade before pulling the plug on upgrading my 2.1. Not to dis this thread with other Manufacturing talk but the price is right and the prior 2 upgrades SE and V 2 were good moves to a better sound i cant pass V 3 up.
I m so happy with my 2.1 i feel the same way dont want to mess up a good thing for now.