do not use vibrapods with LS15. Kills the sound completely. As a matter of fact, I am not using anything under this pre, but am using hal-o tube dampers. They work great.
Tube Preamp Isolation
Currently using Vibrapod cone/isolater combo under my Music Reference RM5 MKIII. I've got it on a Billy Bags rack. I've got an Audio Research LS15 on the way and am wondering what you guys use (if anything) under your tube preamp?