SACD/CD player update

As a step up from the OPPO, the only SACD players worth considering are the Accuphase line. Esoteric is a bit thin sounding compared to the Accuphase. The Accuphase is not mellifluous, it just lets the music through. Accuphase is the reference of most of the high end German magazines. It transforms the listening experience into a conduit to the performance. It does not add or subtract. It can't be fooled by a bad recording into making it worse as Esoteric does.

Esoteric is not popular in Japan as it is built for the export market. 

Sounds like you are looking for musical fidelity the OPPO just isn't built from transport to power supply to DAC (as implemented) and output stage of providing. Sensible mods to my OPPO 105 did help but didn't quite do it. HUGE (all capitals intended) upgrade in musicality and functionality occurred when I added a bel canto DAC2.7 followed by the vastly better DAC3.7  with VBS3. Still use OPPO for DVDs and streaming with the audio out to the DAC3.7 which is doubling nicely as preamp for the OPPO, the cable box, a bel canto cd-2 (for superior cd playback fidelity over using the OPPO as CD transport) and phono preamp. Wishing you the best current and longer term results for your spend. 

I have a recent model Esoteric and love it - superb sound from both CDs and SACDs.  Some years ago Esoteric had a reputation for thin analytical sound, but not the case now.  These are high end players, and their prices reflect this.  CDs and SACDs are still big in Japan, and that's where much of the product action is with Accuphase, Esoteric, Luxman, et al.

Try to audition a PS Audio DirectStream Memory Player. I was a Beta tester for this item and honestly have to tell you that I am hearing things from my CD's and SACD's that I never knew were on the discs. Highly recommended.