TLDR - iFi Audio ZEN One Signature 

You are the first one to point out the input sharing! It is a bit problematic. Though I have been enjoying the sound quality, the fact that when ever I try to change input (cd player and streamer) I have turn the cd player off so the other source can be heard...I find it a bit odd for a company such as ifi to advertise this dac as "the only dac you will ever need " and "one device to rule all your home audio" and at the same time - when all cheap DACs can do it - it cannot even host an optical & coaxial at the same time..

Buy it try it and decide for yourself . I think most of you will love it.