@Jazzonthehudson - I never got around to the AU24 Powerchord, but I would venture a guess that it would be a significant improvement and - 30 day money back. I'm going to do it when I have the chance. I remember the T as being quite a step up in terms of the purity of timbre of instruments, but remember, I listen to 90% classical and acoustic jazz, so I think the difference shows up more than if one listens to electronica or the like. Personally, if you like the AR12, I would stick with Audience, unless you want to go the Cable Co route, which is also cool if you have the inclination. But again, I wouldn't overlook the Powerchord.