I just had my Grado RS1i re-terminated by Moon Audio to a male 4 pin mini-xlr. And picked up two adapter cables for it. A Blue Dragon RSA to mini-xlr female, Blue Dragon 1/8" TRS to mini-xlr female.
Initial reaction to the balanced setup with the Intruder is just plain "WOW". I could immediately hear a difference. I haven't done much a/b comparison between balanced and SE, but I am extremely happy at the moment. I will post more impressions as I experience them. Thanks to Drew and the fine folks at Moon Audio for the quality work and products. Thanks to Ray for an awesome amp.