I got some back when we moved for under my Studio 60's, and I think they came from Audio Advisor, but I don't think Audio Advisor still carries them. I got some isolation feet from Parts Express that came with dimpled discs that would make good protectors (used to separate the 980H from the 2150 in my two-channel setup so the 2150 could get better ventilation) - they may have something similar that doesn't include the feet.