OK first i go for O2+Odac, how i can buy O2+Odac combo at Black color ? I dont see how to choose black or silver ? 

http://www.ebay.com/itm/NEW-Head-Direct-HIFIMAN-HE-400-Headphone-Earphone-FREE-SHIPPING-/251074904952?_trksid=p5197.m1992&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D14%26meid%3D5706404748320034548%26pid%3D100015%26prg%3D1006%26rk%3D1%26sd%3D251074904952%26 what revision at Ebay?

OK i go for O2+Odac and HE 400 but i hear what he 400 has rev1/2/3. For which i should look 2 or 3 revision? 

I like more O2+Odac combo, aesthetic nicer than Schiit combo and i can use O2+Odac portable. He 400 O2+Odac great ? 

it is very difficult to choose headphones, help me MalVeauX. :)

Wow, so much headphones. My budget under 750$  for Hp/Amp/Dac, I cant demo test hp's.

I listening everything except Rap, Trance, Orchestral, mostly I like Rock, Metal, Strong Vocals, before gim Hip-Hop, R&B, Electronica, before bed time Jazz, Instrumental 

Any Ideas ? 

Hello, I am looking for new headphones. I use headphones at home, priority Open headphones. Price for headphones under 500$.