Dean,
I just spoke with John McDonald the President of Audience yesterday inquiring about the iPod to RCA connector cable. It is now up on their website and goes for about $100 retail.
As for the Shure E3c's - I did use mine mostly with the rubber plugs - in which may have hightened the sense of "plugged ear effect"... I was not able to get the foam to give me a decent fit and to keep from moving. However, most that use the E3c's with much enjoyment use the foam. I would assume the foam, being permeable, may not create that "suction" in the ear canal to the extreme that I expereinced with the rubber plugs that allow you hear yourself swallow. That was unfortunate, they were decent sounding, and I would much rather travel with something the size of a couple of golf balls & also cancels noise. If you have an Apple Store nearby they have a return policy (not sure, but think it is 30 days) thus if you don't care for them you may return them. A few online Shure dealers didn't accept returns on earphones.
As for the Grado's, I went to a local store to audition the SR60 and SR125. The SR125 was noticably better. So, perhaps I would try the SR225, they are just hanging there... heh - they sounded quite a bit better than the 125s. There sitting in front of me was a demo pair of SR325's beconing me to compare what the aluminum air chamber sounds like. *chuckles* All said and done, I am now listening through the SR325's. They are *very* good sounding headphones. Please note they are not noise cancelling headphones, if that is a concern.
Good luck!
