I used them on my Devore Nines and can attest to the improvement over the stock spikes. I noticed significant improvement in overall detail and resolution but most shockingly the biggest difference was a tighter and faster bass response.
I was using the Ultra AL with the thread adapters specifically for the Devores.
I say "was" because I've disassembled my whole system including the speakers and the Stillpoints. Don't take that as finding something wrong with the setup in any way (in fact totally the opposite). I'm only selling everything for personal reasons. Stillpoints are the real deal.
Disclaimer: The Stillpoints are still for sale
