Not all speakers rated at 87db perform alike. My Atalante 3 monitors are 87 db and my JBL 4319 are 92db and when I listen to the Atalantes, the volume is turned up only 1 to 1.5db to get the same room filling sound. That's 3 steps on the volume setting if I need to go up 1.5db. Any decent amp will reach levels you wouldn't want to listen to.
As for the bass, the JBLs are -6db @38Hz and the Atalantes are -3db @ 44Hz and it took all of 2 minutes to adjust to the sound of the bass. In fact, it's more tight and defined but not as overpowering.
All the best,
Nonoise