There is review of device in august Audio Magazine /in german/. Can someone tell in few words the summary?

Anyone tried it with Senn HD800 ?

Someone tried it with Teac HA 501 ?

Nice review,thanks. But what do you think about with HD800?

                                                   -   this is about  HA501 or UD501 ?

Quote:

Looking for an amp for my new Sennheiser HD800, is this Teac good enough for them,or to go for smth else,any opinion? Thanks.

At last purchased HD800 ,like the sound ,think about do I need headphone amp in future or not,though everything is fine right now.Thanks to those  joining discussion.

They say it is program failure on authentication page.

Any opinion? Thanks.

Hi all! Just purchased HD 800. Own good headphones for the first time,guess everything is OK,but when tried to check authentication on Sennheiser website appears : Authentication failed! Unfortunately we cannot identify the number you have entered. Please give us the following information so...

http://www.head-fi.org/t/567608/integrated-amplifiers-with-good-or-excellent-headphones-out-contribute-to-a-list     -they say amp is ok, so whom to beleave?Is someone auditioned it with good headphones around here? Thanks.

What about Sony Z1000?

          "..... K701 is just very hard to drive"   -maybe that is right for iPod or some other mobile devices,but the question was about Yamaha A-S2000.Do you know anything about it?

Quote:      I think these data is about  measurement conditions and does not means any requirements.