"Does e.Digital technology do digital to analog conversion?"

analog to digital converter circuit.. or CODEC....

No, not directly, they do, however, manage the output and input on the digital streaming side... to and from the memory. They can inplement multilple types of CODEC's on a device enabling a multi CODEC device....through their micro-controller concepts and memory management.

I note...

" It is slightly larger and has more memory, two DACs and costs a whopping $1,299."

anyway...big price tag... they do not mention the CODEC types....???

doni