Help needed to make system better, please

I currently am mostly happy with my current system. I have moved my Daedalus Audio DA-1 speakers back into main spot. I run Simaudio Moon 740p balanced into Simaudio Moon 760a. Quiet, transparent, plenty of power. Good soundstage and imaging. Could use SLAM, PRAT, or dynamics. And a little treble extension. I want more meat on the bone sound. I know tube preamps deliver more rich, or “meat on the bone” sound, but usually are slower with less bass. I was told to try Pass Labs amp, but think they have less resolution and slight distortion. So, I am looking for direction. I was told BAT preamp has better dynamics. Thinking about a BAT VK-53se running balanced into Simaudio amp. Would this be forward move, or sideways? Definitely don’t want to go backwards. I can listen to my system for hours. No fatigue. Just feels like something is slightly missing. I do like dynamics, but I also like transparency and dead quiet background. Any and all suggestions are appreciated and welcome. Please let me know if you have moved on from 740p. What did you go for, and why? Is Pass Labs amp going to be a positive thing? I don’t want to keep going through gear. I am close now, just wanted that little richness and PRAT.