Amp recommendations: Wanted, Bass and Dynamics

I have a Music Hall CD Player running through a Channel Island passive preamp and ultimately out my Spendor FL9's.
Audioquest Diamondback ic's, Wireworld and MIT speaker wire.

Very musical, with extremely natural soundstage, but I'm lacking the dynamics, bass, and bit of articulation I've grown accustomed to in my previous system.

What used amp upto $1500 do you recommend to keep the musicality, but add a lot of punch, bass presence and articulation? Leaning toward a lot of power.

Marsh 400s
Musical Fidelity A3CR
Bel Canto EVO 200.2
PS Audio HCA-2
Krell KSA 150
Monarchy se100 monos
Rega exons

Others??? There are so many options, but I have a limited selection to audition. This is where your opinion comes in. All ideas welcomed.