I have a pair of Sennheiser HD 650 which I love.  However, at work I need a close back headphone due to proximity of co-workers.   Currently I have a pair of NAD HP50 which I use with my Schiit Valhalla tube amp with Uber Analog upgrade.  I like the NAD headphones but the headband gets very...

Are you using (4) of those replacing the 6N1P and 6N6P stock tubes?

Which Gold Lion tubes are you going to try with the Vahalla?  E88CC?   Definitely interested in what tubes you roll and your impressions.  I have a Vahalla and just getting started trying out different tubes.

What about Glow Audio amps - anyone have any experience with these?   http://www.glow-audio.com/AmpOne.html

At work I love my schiit vahalla/bifrost 650 setup.  I would like to set up something similar for music listening at home.  I have some Klipsch bookshelf speakers that I would like to use in addition to headphones.  I was excited by the McIntosh mha100 product until I saw the price of $4,500.  ...

I went with the NAD HP50.  Got them today - can't wait to try them tomorrow at work.

  Ditto.  I have been looking around for reviews and your post is just what I was looking for.  I would be very interested in your impressions of the MHA-100 on it's own since that is how I would be using it.       Thx!

Some options from research through the forums/web.   Bowers & Wilkins P7 NAD HP50 Sennheiser Momentum Beyerdynamic DT 770 (not sure if I would need 250, 32 or 80 ohm with Vahalla/Bifrost)

Some options from research through the forums/web.   Bowers & Wilkins P7 NAD HP50 Sennheiser Momentum Beyerdynamic DT 770 (250 ohm)

... target is around or less than $500 ...  

I listen to music all day at work - CD player via optical, Fiio X3 coax FLAC.  Currently I love listening with Sennheiser HD650 with a Schiit Vahalla with Bifrost Uber Analog.  I do not listen to the music at very high volumes - more interested in clarity and soundstage of the music.     Early...

... target is around or less than $500 ...

I listen to music all day at work - CD player via optical, Fiio X3 coax FLAC.  Currently I love listening with Sennheiser HD650 with a Schiit Vahalla with Bifrost Uber Analog.  I do not listen to the music at very high volumes - more interested in clarity and soundstage of the music.     Early...

I found the Mr. Tom thread -  http://www.head-fi.org/t/626399/the-best-of-the-bunch-russian-tubes-for-schiit-valhalla-version-1-2

Hey Now!   Very interesting discussion!  Learning a lot.  I grew up with a father that had all McIntosh tube equipment and large corner horn klipsch speakers.  My ears were tainted at a young age :-)  I recently purchased a Valhalla and Napa-Acoustic NA-208C CD player.  I switch between...