Krell upgrade mistake?

My system includes:

Krell KSA 200S amplifier
Revel Performa F32 speakers
Ayre CD player
Thorens TD320 turntable

i recently gave my son my Krell KRC-3 preamp because I obtained a Krell KCT preamp here on Audiogon.  So I put it in the system and fired it up.  I made a test cd some years ago and the first cut is Sting’s “A Thousand Years” which features some very low synthesizer notes.  Well the resolution and clarity was great and more detailed than my old KRC-3.  But the deep frequency passages were almost non existent.  With the KRC-3 that first note would shake the house.  I thought the preamp was broken.  I plan on playing around with connectors but the lack of bass slam is significant.  I have two questions;

1.  Is there a way to correct the issue?  I have heard that utilizing the cast system with a newer amp may do the trick.  I have also heard that using a Krell KRC-HR will also remedy the situation.
2.  If I can’t fix the problem, is there another preamp out there in the $3000 range that would be a good match for my system.

Thanks in advance for your help!