Hi all,
I'm a headphone and home theatre enthusiast who trades a fair bit on headfi and eBay.
For headphones, I use a modded Sennheiser hd800 and a MrSpeakers ether flow. I currently use a regen for my hd800 setup and I've been hunting for a second hand ifi iusb 3 micro so I can compare with the regen. A listing here for the ifi iusb 3 caught my eye so here I am.

Curious how long this "probationary" period is for.
Anyway without being any more long winded, other equipment I have are jh13 pro fp ciem, a 5.2 system and a 7.2 system made up exclusively of Boston acoustics vs series speakers and two svs sb12 nsd as well as two bnw pv1d subs.
I'm atsq17 on headfi and I've tried a lot of headphones and related equipment. Feel free to ask me about them if you want (not sure if I can receive pm so if you can't just post here in reply I guess).
Cheers.
Ps: I'm normally way more long-winded but I typed all this at 4am local time on my phone in bed with insomnia.
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