Yeah, 5-Meo DIPT and DIPT are different. Shulgin has info on it in TIHKAL. Apparently, it does affect the sense of hearing without much else. Check Erowid.
I have a mate who tried dipt and he said that it was just wierd. He experianced absolutely no other effects from the drug except hearing distortions. No body load/discomfort or emotion change at all.
Not really high on my 'to do' list I must say but maybe I'll get round to it.