I'm really interested in AK120 Titan for my Roxanne. More than anything, I think I want to stay portable. I don't really completely understand the impedence discussion, but it looks like Red Wine Audio AK mod lowers the impedence from 3 to 1. This is very positive, correct?
They also have a B and S mod, but it seems that they need to utilize a separate amp. I haven't really considered this direction. How much am I missing? Should I be refocusing again?
I have no affiliation with Fiio or iBasso, but I really think you should at least consider listening to their forthcoming X5 or DX90 DAPs before shelling-out on an AK120 variant. It might be that you still go for an AK120 afterwards, and that's fine, but please don't assume that just because the X5 and DX90 are less than half the price of the AK120 they are unable to compete, in terms of SQ. Cheaper DAPs are getting better and better at the moment.