Every input. External converters seem to be completely unnecessary for the Yggy/don't make a difference. I believe it is mentioned in another thread here on head-fi, but the Yggy punches virtually every dac in the face quite hard. I'd recommend that you wait for it to come out and read reviews from other head-fiers, but I've followed certain head-fi members about this for long enough that I'm convinced. Mike and Jason know what they are doing from all accounts.