No time for a lot of comment just now, but so far I can say that the Total Bithead is *extremely* well made, and a very simple plug and play substitute for a laptop internal or PMCIA soundcard. Mine is black. The HeadRoom guys were extremely helpful and pleasant. It took awhile for them to give me a price using the e-mail feature on the website; I suggest calling them instead. Once I called, all e-mail questions were answered in a matter of seconds, and I had quite a few. I ordered on 3/31 and they got it to me on 4/6.
The Total BitHead is just about exactly the same size and shape as a Blackberry handheld device, although slightly heavier w/batteries.
I'm using it with brand new K-701's, so I need some burn in time before I can do much comparison evaluation.
Over the next few weeks, I'll be comparing the Total BitHead to the Xin Super Micro III using either computer or I Pod Nano as source, and the K-701's or E4C's for phones.
I love all of my new toys, but I need more time to develop and articulate my impressions of the various setups. ( I was listening to shoddy 128kbps mp3's via an Audigy 2 ZS PMCIA card and Triports or worse a mere 2 months ago, so I need to chill awhile and learn).
So far, the only purchase I regret post-Triport is the Shure E3c's; the E4C's are an order of magnitude better IMO even unamped, and the improvement in SQ is disproportional to the moderat increase in price.
The E4c's sound superb; the E3c's are just good at producing clear vocals. When you compare them running through the Xin Micro III on a Nano, the difference is absolutely stunning. I haven't compared the IEM's through the BitHead, and probably won't bother unless someone wants me to. It took about 3 seconds to realize that I have absolutely no further use for the E3c's; my 14 year old son is about to get a freebie upgrade from stock Ipod buds (and an audigy 2 ZS for that matter). Perhaps he'll take care of me when I'm old, deaf and broke due to Head-Fi addiction
I also ordered a high-end mini to mini from Alex at WyvernAudio.com; an 8" A-8. I want to create a near "perfect" Nano-based portable audio system, so I went nuts on the cable too. Once I get it, I'll post comments on the cable forum. Since I already raised the subject here, however, let me just say that Alex at Wyvern is a *very* nice guy who obviously knows and cares a great deal about hi fidelity sound. He's a fellow headfi'er, but I don't remember his Head-Fi handle at the moment.
Now, I wonder how much longer I can avoid looking at my credit card statement....Denial is such a useful defense against rational behavior.