Need to build a headphone system

Sennheiser HD800S headphone comes to mind for that particular music you like but also because of the fairly light weight and large earcups that would accommodate hearing aids better than most other headphones. Also the Hifiman HE1000SE previously mentioned may have large enough earcups and is very detailed sounding as well.

For amps you may consider Cayin HA-6A tube amp for its detailed sound with some tube warmth. It has a variety of outputs and settings to tailor the music. For something more lush maybe the Woo Audio WA22 tube amp.

FYI: For Sale Now on Head-Fi

https://www.head-fi.org/classifieds/woo-audio-wa22-2nd-gen-w-extra-tubes.44614/

https://www.head-fi.org/classifieds/sennheiser-hd800s.45206/

Thanks for everyone's help.  I'll be at Audio46 on Friday, then seeing what else I need to listen to and where I can find it.Reporting back soon, I hope!

Bring your own music and headphone amp/DAC if you can as it’ll help you get the most out of your visit.  Definitely listen to the Hifiman HE1000SE or at least the HE1000v2 if they’re available.  I own the Arya Stealths and I’d recommend listening to them too, but by all accounts they aren’t at the level of the HE1000 models although I’m quite happy with them driven by a Singxer SA-1 amp and Musician Pegasus R2R NOS DAC.  FWIW…

BTW, I’d recommend using one of these parking services to secure a spot in a parking garage as it’s highly unlikely you’ll find street parking in that area.  Check both as they cover different parking venues so one might get you closer or give a better price.  Have fun!
https://www.bestparking.com/new-york-ny-parking/neighborhoods/new-york-city-parking/

https://www.park-whiz.com/p/new-york-city-parking/

For chamber music, small ensemble, and solo instrument, Sennheiser HD600 or its upper series with DHT SET (singled-ended design as opposed to push-pull) amp will be fantastic. 

I build my own tube amps as a hobby and use DHTs such as 71A, 45 with excellent result with these types of music over headphones. Not sure what is available commercially, but want to mention that tube amps have different designs. Singled ended design with DHT tubes sounds best to my ears.