Do they work? Probably not as well as advertised. From an engineering concept and point of view a benefit can be had buy carefully controlling vibrations and draining them properly. First approximations by good intuition could yield good results. I think that my Sound Anchor stands under my Audio Note Ankuro's are better than the tip toes I they replaced. The thick Berber carpeting was better penetrated with the longer spikes supplied on the stands and made they made better coupling to the concrete slab floor. The stands cost were a huge $ investment over the tip toes way beyond any true cost benefit, but I am very happy. I did it when it was a detail I could afford. I never invested in partial answers between the tip toes and the Sound Anchors because I had an idea where I wanted to get to in the end. More cost effective elements can be found in stone yards, scrap yards, junk stores. The benefits of better air flow of raising the amps nine inches above the floor is clearly a tube life win. It also looks cooler. Go with your intuition, I do and it will be generally correct to a point. Good luck.
Amp stands- Do they work?
I recently purchased a Pass Aleph 3 and loved it so much that I "had to buy" a pair of the Aleph 2 monoblocks. I have been A/B-ing them at my home for the last 3 weeks for most of my free time. The 2s have a lot more presence, but lack the for lack of better words "musical reality" the 3 has. Forgive me for the term, but if you've heard the 3, then you probably understand. Anyway, I have asked most of the guys at Pass Labs and they essentially tell me I am hearing things- that the 2s "have all the sonic characteristics of the 3, just more of it" I have eliminated all other variables except that the 3 is on the bottom of my rack (Salamander Archetype), and the 2's are on the carpet in front of my system. I am interested in anyone's input as to the impact a reasonable stand might have on the sonics of my amps. I currently am acting on this hypothesis and have put the 3 on the floor next to the 2's. If it is of any help the components are in order- my source is a Muse Model 5 transport, Illuminati D-60 digital, EAD 7000 MkIII D/A, Kimber KCAG, Muse Model 3 preamp, WBT 5151 -great cable!!!!!, Pass Amps, Nordost Red Dawn speaker cable, B&W 804s. Counterpoint PAC-5 conditioner, API Power Wedge 4A conditioner. Marigo RMX ref power cables. Amps are using stock power cables- Nelson Pass's recommendation. Thanks for listening and I look forward to any input.