CD isolation platfroms

I've found the Townsend seismic sink, either in it's new form with springs, or the older ones with an air bladder, to be more effective than anything else I have tried.

I also have a Salamander S30 rack (with side panels and a door). Besided the recommendations for isolation platforms, I'll suggest isolating the shelves from their brackets (I use some Herbie's dots), and adding mass to all of the shelves. If yours has side panels or a door, you can apply rubber tape or caulk to the seams to eliminate vibrations. Just tap on all the surfaces to figure out where it's needed.

I second the recommendation of SRA - Silent Running Audio. Kevin Tellekamp is a physicist who understands resonance and isolation. His Craz Racks, Ohio Class amp isoBASEs for my Lamm M1.2s and VR Series 3.0 isoBASE for my Ayre DX-5 have taken my system to a whole new level.

I'm sure the VR Series 3.0 isoBASE would improve your Ayre C-5xeMP as much as it improved my DX-5.

Finite Elemente has made a significant sonic improvement for me.

Another vote for SRA. I've tried quite a few isolation products that make my components sound different but the SRAs pretty consistently make them sound right. Their entry-level Tremor/Less platforms start at around $300.