I haven't seen this info in a single place, so I thought it might be something others besides me are interested in knowing.  Here are the list of DAPs that have a balanced output both in current production and planned.   Current Astell&Kern AK380 Astell&Kern AK240 (incl. SS variant)...

I'm in the process of adding mini XLR jacks, one in each can, to my DT770 600 ohm.  The intent is that I can then use the high end cables I purchased for my Audeze LCD2s interchangeably with the DT770.  In all the Beyer recable mod threads and guides I can find, none of the photos show these...

If you read my other post, then you know I'm very happy with my Beyerdynamic DT-880 250 ohm, Schiit Vali and, Fiio D03K DAC setup. They go amazingly well with the electronic music I listen to. I used to think my Audio-Techinica ATH-M50 sounded great with my MacBook Pro, but now I see the light...

I'm a noob and have been reading a lot lately about recommendations on good quality headphone gear. I've had a pair of Audio-Technica ATH-M50 for almost two years. I was originally hesitant that spending a bunch of money on a headphone and amp would actually make much of a huge difference...