krell & merlin what next?

My friend just recently lent me his krell ksa150, to drive my merlin gen III. Prior to that I had been using a pass a40 which was very satisfactory, the pass is not very powerful but it is musical, I get engaged into the music. Then I got this krell and I noticed how the sound was effortless, there was no struggle , there was more power and thick sounding bass, high frequency was there -all of it, and it was detailed . But I wasn't engaged like I get when I use my pass amp. What amp should I look for if I like the power of the krell and the engaging sound of the pass? Parasound, joule, atmasphere, CJ mf2500a, ar, theta, berning, hovland, convergent. I am looking to get the best sound possible, I liked what I heard when I listened to JM Labs divas, kharmas 3.1 with joule stargate, dynaudio c4 and the mbl's $45k top the list thanks for looking.