On the draining of resonance.....

I think the idea here is to remove excess or spurious energy from your system so it doesn't interfere with the good vibrations:-/ Whether it is internally or externally generated, resonance isn't an instantaneous or infinitely singular event that "happens" and then it's over, rather it involves vibrations or resonant movement within a system that usually decays over time. Draining unwanted or spurious "resonance" away from an audio component to an adjacent structure were it can be absorbed or dissipated as heat is a legitimate concept, at least in theory, to limit vibrations to those related to the relevant musical content, and not the frequency of your motor, transformer, etc. Try it for yourself, you might like the results.

kn

don't pay attention to the man behind the curtain Dorothy!...;-0

Draining vibrations for all many of things has been around for a long, long time.
Vibrations oscillate or reciprocate and can build up to be more of a mess if left unattended. Minute they can be and limited in scope and effect, but in the end it can be heard.

All the best,
Nonoise

Sure, resonant vibrations do occur--damping materials on interior walls, heavy transports, platters--all doing their job at the source. it's these claims of draining vibrations out from the top and killing them from the bottom, and it all takes place at the end of a cone, on a 1 mm round point. Yes, this is effective for mechanical vibrations in the rack, etc, but it seems to be asking a lot of that little point, or saying a lot, e.g., "We're gonna get 'em comin' and goin', yep you can count on it." Vibrations, that is, or perhaps customers.......

I am not quite sure what your point is:-/ That 1. The idea of internally generated vibrations being materially harmful to sound reproduction is unsound, 2. Even if it is harmful, which you doubt, (see 1 above), there is nothing to be done about it, and 3. A little point is less useful than a big point. Or maybe all three?

As for verifying points one and two above, I suggest you try it with a piece of gear with moving parts, tubes or transformers and see if it helps. Start with something cheap like small hard wood blocks directly on your support shelf to replace your rubber coated stock feet, and if that helps, you can try more elaborate and expensive "solutions".

As for addressing point 3, I think a mechanical engineer could add value here, but here is a lay person's take. Let's say you have a 35lb tube amplifier with big transformers that generate some internal resonance you want to "get out of the chassis". Your options are the 4 x 50 mm diameter rubber coated feet resting on your glass, wood or MDF shelf versus 4 x 1 mm points sunk slightly into a 4" thick hard wood slab (the same general size as you gear chassis or bigger, not to be confused with the small wood blocks described earlier). In the first case, the feet may slide slightly on the surface, reducing the transfer of energy to the shelf, and more likely, the rubber will act as a spring to some degree, storing and releasing energy back to the chassis, smearing over time any residual effect of the internal vibrations. In the second case, assuming a solid connection between the chassis and the body of the point, energy in the form of vibration from the chassis is transferred directly and effiently to the underlying wood slab, which then dissipates that energy as heat between and among the matrix of it's fibers. External vibration from the room can be minimized by isolating your shelf and or the wood slab with some kind of soft material that reduces effective transfer of vibrations to the wood and the chassis of your gear.

Ultimately, this is all just a bunch of words. You can continue to try to make some points, or you can just try points to see if they make a difference. Up to you.