I had this preamp a few years back and tried numerous types of feet with it. Carbon feet worked the best, and I settled on the BDR Type 4.
Also remember that proper resonance control REQUIRES three feet, not four. Lord knows why so many manufacturers use four feet. And don't forget to use the cones pointing up.
Also remember that proper resonance control REQUIRES three feet, not four. Lord knows why so many manufacturers use four feet. And don't forget to use the cones pointing up.