Can't believe there is no review for this excellent DAP yet.   I won't duplicate what I said here:  http://www.head-fi.org/t/684939/back-to-hm-901-hm-901-ak120-hm901   No regret after I bought it the second time, and this time I'm gonna hold it until a better Hifiman DAP comes out. Would have given it a full 5 stars if not due to its UI.