Pre/Amplification for Amati Homage

Suggestions appreciated for Amati Homage preamp/amplification.

Bass in need of speed and tightness.

390S Levinson CD.
383 Levinson
Transparent Ultra interconnects and Speaker Cables

Before throwing alot of money at equipment, take a serious look at your room and set-up first. That may solve your problem.
I agree with FrankG. Many times this can be from placing speakers too close to back AND side walls. If you don't have You might look into Stillpoints with Risers under speakers, and components. Available at Audio Tweakers