I don't fuss much with tweaks like isolation feet, but every tube audio device I've ever owned has benefited from NOS signal tubes. That benefit was very apparent to me with the Jolida -- one of those "hokey smokes!" moments. So I basically consider them required now, but that's me. It's still a fine player with modern tubes, just that much better with old tubes.
Is it the last word in refinement? Nope, it lacks detail compared to better players, but I find it nicely musical. For rock and vocals, I'd think it might be a good fit for you, but we all have our preferences, so please take my comments with a grain of salt!
Good luck.