I notice you sold the Plenue R though? Did you keep the ZX300?
I don’t fiddle with the JetEffect settings and just tend to put it on BBE MP and leave it there, which lifts the bass and enhances the soundstage. But I find that even with that the bass is lifted, but doesn’t have much weight to it. It’s hard to describe, but it sounds a bit thin rather than full-bodied. But all-in-all the detail and ease of use does make it an interesting player, I’m probably just being picky! - But that’s the unofficial motto of head-fi right