I worked for Kenwood in the early 80’s, the L-07D was one of my best C stock purchases ever. Built like a tank for sure, I moved twice with it, without original packing, aka C stock. Unfortunately ignorance on my part led to it ending up on the scrap heap, when the motor crapped out Kenwood was...
Theirs nothing wrong with the DP300 as a starter table, take baby steps. But you need to look at the entire system as a whole and what the objective is. You can get into a rabbit hole really quick without a clear objective.
Mine seems too be quite buggy, DSD256 totally stopped working, the led indicator for DSD format is pooched, it either always indicating
DSD64/128 or DSD256 no matter what format is playing. It was crashing as well when a DSD256 followed an ALAC, but now since DSD256 stopped working, no more...