No Esoteric transport or single-box player I have ever used supports "Dual Disc". You will get "Disc Error" every time.......its in the manuals as well, or at least it was/is for the DV-50X, UX-1, UX-1 Ltd, P-03, P03U and P-02.
Esoteric K-03 X - mechanical problems w tray
...just bought a brand new Esoteric K-03X player and have only 14 hours on it and the tray is jammed and the disc is stuck inside. Real nice for this price .....you will see I had the Esoteric P-05 and the D-05 for almost 8 years which I sold here on Audiogon and NEVER had one problem with those pieces. I think I read where others owners were having the same issue...if this is the case not a happy owner. Not to mention the box weighs almost 100 lbs and who is going to pay for shipping and the hassle of boxing it etc. After 40 years with this hobby .....more of a headache anymore than fun !