If resolution is your thing, then consider the Kinki Studio EX-M1 integrated. I doubt you'll find anything better without spending multiples of it's asking price.
I still have my Marantz Reference PM15-S2b which Ken Ishiwata worked on using some of the tricks he used in his Ruby series and as fine as it is, the Kinki easily wins out on the resolution front, as well as dynamics and sound staging. It all goes hand in hand when the resolution factor is upped: everything improves.
All the best,
Nonoise
I still have my Marantz Reference PM15-S2b which Ken Ishiwata worked on using some of the tricks he used in his Ruby series and as fine as it is, the Kinki easily wins out on the resolution front, as well as dynamics and sound staging. It all goes hand in hand when the resolution factor is upped: everything improves.
All the best,
Nonoise