I just got my Tzar 350 and I just want to say thanks to the Heir Audio folks. This thing excude quality, pairs great with my Hisound Audio studio v3 (greatly reduce the hiss). Heir Audio totally get my business for my next purchase, looking at you 8.A. Maybe Heir Audio will do another promotion around Christmas again? /nudge /nudge.
I was never much of a fan of HiSound because of their lead amp designer but with my Tzars the Studio V just might be quite the pocketable gem. It won't beat my DX100 when I'm at my desk, but when it comes to portability and battery life HiSound has the edge.