Raspberry Pi (and similar) as audio player

Is He already compatible with Volumio or Rune audio ?

 

Nice! Once RuneAudio makes a Pi3 build I'll upgrade my board.

 

The Soerkris R2R DACs accept I2S. Most builds I see use an XMOS or Amanero to produce I2S from USB to interface with the DAC, though I believe that someone clever enough can make a card to interface between the DAC and Pi to transmit the I2S signal.

While the Soerkris doesn't have the megaburrito filter, you can upload custom filters. Maybe an independently derived version of the closed form filter will be available and can be tested out on the Soerkris DAC one day.

 

Let's say I want to directly attach (not interested in NAS) 8TB of storage, is there any way to do that without going USB?

 

I guess if you want to avoid rj45 (and of course wi-fi) and usb the only way I can think of is sata.
mSata for ssd up to 1TB
http://www.pi2design.com/store/p1/502SSD_-_mSATA_Solid_State_Drive_Shield.html
sata for 3,5" drives up to what I don't know
https://www.amazon.com/Leaning-SX300-Expansion-Raspberry-Designed/dp/B00P0NOYY0