I bought an ES DMP A-6 last February, played around with various settings on it, then added a Centaurus R2R DAC.
My two cents? It made a YUGE difference. I bought a Denafrips Pontus 15th and the seller never sent the unit, meanwhile there were “supply chain issues” and I bought the Centaurus on a try/return option.
Chain is: DMP - Centaurus - Tektron TK2 2A3 (pre-WW2 single plate RCA tubes) into a pair of Schmidt Audio Ubiquitous V2.x (I upgraded speakers and tweeters a bit for higher gain, about 97 dB/watt now - measured). Sounds awesome, spacious, deep, well-resolved. I run old R2R tape through a REVOX PR99 MkIII into an APT-Holman preamp with Schmidt’s SUBiquitous and it feels like front row orchestra with the right tapes. LPs are just as good. Again, all through the Centaurus.
Still wonder what I’d gain with the Denafrips at $1k more, but for now it’s good enough.
As “they” say (they know who they are) YMMV.