Need more slam! Help!

Hi all,

For the most part I am very happy with my current system. I’m still pretty new at the hobby, been about 3 years or so but in that time I feel that I’ve been able to cobble together a pretty nice system.
I currently have a vpi prime scout with an ortofon 2m black cartridge running to a musical surroundings phonomena to a rogue rp1 preamp, to rogue st90 amp and concluding with vandersteen model 3 signatures. Audioquest diamond back interconnects and kimbercable speaker wire.

First, here’s what I love about my setup - huge soundstage, really open and three dimensional. And this is probably what I find most exciting in home audio reproduction, I love feeling as if I’m looking at the stage from the third row and can pick out where everyone is, truly magic to have that feeling from the living room couch. I am pleased with the speed and accuracy of my system, it feels very articulate and controlled.
Now for what I’m yearning for, basically just more omph. I want a lot more snap on a snare hit, I want to feel the music more in a physical sense. I guess you could describe this as a more “live” sound but that’s not exactly what I mean. I really just want some more slam. Where should I be targeting, thinking power amp? Thanks in advance!