Another question I haven't seen here. Is the analog RCA in the do5 the same used in do3? I´ve researched a lot and bot units will serve me right but I will prefer the do3. I will connect TV on digital, turntable with the ifi zen phono pre on RCA, computer and phone on usb and BT. How "bad" would be the RCA in this set up? Thanks and sorry about my english, not my primary language.