Well ditton, If it twas I, to make sure I had the best possible medium for my system, I would move the tranny closer to the dac, and experiment with cable types personaly I use AES/EBU and on the T/D combo a clock link thats been clocked!!!!, are you using the dax clock link as well?, but I have to say 7m 22ft aint short, I've seen AT&T's 6m go for $120ish, (Here's the bit the sceptics love, for me I would have the best possible digital link between the trans/dac I could go for, it does make a difference, if you get the chance to compare all formats together please do Its's ear opening)
The wadias have 6 selectable inputs that are swopped via the handset, so this is easy, their transports can output 4 different formats at one, Toslink/AES/BNC/AT&T. wadia recommend AT&T, however I use AES for syn extraction & audio data signals.Wm