I recently upgraded my integrated amp to pre/power separates within the same manufacturers line. This doubled my power. Detail, clarity, and openness improved signficantly. I am amazed how good my reasonably priced floorstanding speakers sound.

However, there is about a 20% loss in bass slam compared to the lower powered integrated amp. Although the bass is tighter and more controlled. No hint of boominess that on rare occassions crept in with the integrated amp.

My questions are:

What is responsible for the improved detail? The amp or the pre-amp?

What is responsible for the loss of bass slam? The amp or the pre-amp?

I'm trying to decided if I need a better amp, of If I just need to get used to the new sound, or what I should do... Thanks a ton for any comments!