Perhaps I misunderstood. I never had th Touch, I was commenting on the PSU itself and as used with the Kingrex USB to SPDIF converter where it made quite a difference for the better over the stock wall wart.
It is a heavy little fella, with a toroid and regulated output. You can't go wrong; also KingRex strikes me as a company that really cares about sound and its' customers (I dealt with the Taiwan HQ direct).