I'm a head-fi lurker who has avoided posting until now, but it seems there aren't many folks out there with the Teac. I bought the UD-H01 purely for the DAC; I wanted an upgrade from the HRT MS2+ for my system (Macbook via Audirvana+ -> DAC -> Woo WA2 -> Beyer T1). Hadn't tried the headphone out until I saw your request. Plugged my T1's directly into the Teac and listened for a half hour.At the risk of being seen as a shill, here are my random thoughts:
- Power / Volume isn't an issue. Comfortable listening level at around 5/8 max volume.
- Significant loss of sound-stage relative to the WA2
- Bass reproduction lacking in texture and quantity
- Feeling that notes lost weight relative to WA2
- Highs are handled well and sibilance wasn't an issue
From what I recall, overall handling of the T1's was better than the Nuforce HDP, another product in the same price range. Of course, my test is far less than ideal as the amp requirements for the T1's are quite a bit higher than the D2000 or the SE425, and the WA2 a much more expensive amp. I will try to dig out my Sennheiser IE8's and see how it handles those if you are interested.
The above shouldn't be considered a representation of the Teac's capabilities as a DAC. I found it a clear upgrade over the MS2+, with dramatically better handling of both highs/lows. I'm hoping more reviews in the coming months will vindicate this little guy as a strong competitor in the value DAC space.