Does High End In Wall Speaker Wire Exist?

Conduit is a great idea, then I would run the new Kimber 12tc, unterminated, to the speakers. That would sound, very nice, I think.

Speaking from experience, I would have put extra in wall conduits in. That way if you wish to change the placement of any equipment you have the options. You can always blook them off with blank wall plates or similar.
Good luck, John

Just replied on the other thread titled "hi fi in wall cable"

I tried the new Kimber 12TC - and it was good, but not able to handle the 25ft of in wall length I had.

The best solution I found was to use the remote sense capability of the Spectron amp (I did this with unused coaxial video cables).

Particularly in monoblock mode, the results were outstanding - almost as if the 25ft of speaker cable completely vanished!

Before you go ahead and hide speaker wires in the wall, set up the system with the wire and length you have in mind, and see what it sounds like.

I think you will find that 25 feet is not a good idea for speaker cables, regardless of the brand or model!

You are better off placing monoblock amps near the speaker, and running long interconnect cables. However, many preamps will not drive long interconnects- really the only way to do this right is to go to balanced line operation between the amp and preamp. Compared to the long speaker cables, you will hear an instant improvement in clarity, detail and bass impact.

Balanced lines, if set up properly, can be run to any length and the cost of the cable has no bearing on the sound of the cable, keeping in mind the caveat I imposed at the beginning of this sentence. By that I mean that if you have them set up right, 100 feet will be no problem and your investment in the cable need not exceed $300 for both channels.

The Sashas will totally tell you what I am talking about- this is not a subtlety!