The most amazing interaction between an isolation device and a component in my experience has been between Iso-Cups and the Torii Mk III. As will and OC have also noted, moving those under the Torii can cause a different presentation. My current favorite locations are the two front underneath the rectifier tube (5U4G in my case) and the rear just in front of the original rear feets' locations. Very ambient and enveloping sound, recaptures a bit more of what I had with the ERR as compared to the HR-1 Omnis now in the system. A mellow top end and a vivid midrange. Where I have a "needle drop" and the same LP this is an interesting comparison, quite similar in all important ways.

Locations of Iso-Cups are very interactive under other components, but most revelatory in my system under the Torii Mk III.

Hey JD, that's so cool that we both discovered that sweet spot! I think the Iso-Cups are amazing under the Torii, and yes on stands or racks helps as well. I'm always fascinated by isolation and coupling and audio.

No, at present I can't use Iso-Cups under the CSP2+ because of logistics. Where I have the preamp if I use the Iso-Cups and the PS Audio Perfectwave AC-12 power cord that I love on this preamp it won't stay in place due to the weight and the backwards pull of the cord. I have it (and the ZP3) now on Tenderfeet, which is an improvement over the stock footers. But soon I'll have another set of the Ingress Audio Engineering "Rollerblocks" and I'm going to try those under the CSP2+ -- my experience with these under my HR-1s is very favorable.

Hey Mike, yes I've tried them. They work well actually. A bit better than what I do use (Tall Tenderfeet). BUT . . .  I use the PS Audio PerfectWave AC-12 power cord on these "half chassis" components and the weight of the cord prevents the ZP3 from seating on the Iso-Cups and staying put. Using a lesser cord yields less great sound than using this cord and using the Tenderfeet. So that's what I'm using. The Tenderfeet really get you  almost all the way there soincally, especially as I have these on my two CSP2+ as well, and all three preamps are sitting on the Skylan amp stands made for Decware, which are doing a good job of helping with vibration control as well.

I have one stabilizer on mine, each of my components has one.

I think unless you have a thick and heavy power cord there's no issue with the Iso-Cups. Mine are just too thick and heavy, and with the IEC outlet on the top, and the cords arcing down to the PPP below, the unit just won't be stable on Iso-Cups.