I'm using Cardas golden presence as an interconnect after trying kimber select and harmonix gs 101s. I had an all vac tube arrangement before the ayre and while I did gain presence and dimensionality with the ayre I miss the ahhh feeling the vac often provided. I'm not sure what that is but I just added a Cayin tube set headphone amp to go with my akg 701 headphones and found the ahh factor in spades. I don't how to translate that into an audio term but I guess i would call it musicallity. Thanks for your post. Jim
