I recently ordered HD650s from Sennheiser and a Zero DAC. This is my first audio setup and am very confident in it based on reviews posted here. I recently listened to a friend's setup (Creative X-Fi -> DV337 -> HD650) and absolutely loved it. It was far better than any equipment I've ever owned (gaming headsets lol). This got me thinking about the amp in the Zero. I have read that the DAC is very good considering the price, but the amp portion can be lacking. I would hate for the equipment to arrive and find myself disappointed now that I've listened to a greater amp.
The price on the DV337 is a little high for me at the moment and I have read that they are having some quality control issues. I am a little skeptical about purchasing one at the moment. I read a few good reviews on amps made by Schiit. The Valhalla looks promising based on initial impressions from head-fi users.
I am sure the obvious choice would be to save up for the DV337. I would be using the Zero as the DAC (will upgrade that later). Any strong impressions on the Valhalla when compared to the DV337? Any input is greatly appreciated.