In reference to some of the threads around footers and the channeling of resonances and vibrations, the theory of having such a device under your audio gear or speakers will most likely contribute to a change in sound quality.
As CEO/Designer of Krolo Design, I have manufactured Krolo Enhansers with 3 key criteria's in mind: 1) reduce distortion and vibration 2) reduce background noise 3) allow for a better soundstage. This was achieved by using two types of metals fabricated in two separate shapes with an air gap that allows the resonances to dissipate through that opening. Having such an air gap allows for a more realistic, wider sound stage. This is also true for the audio rack that I designed and manufactured which integrates the same principals, where both solid wood materials and metals are blended together to ultimately achieve the goal of reducing vibration while enhancing the sound quality. One of the unique features of my rack known as the TOMO Rack, is the decoupling of shelves from the main frame which has contributed to the reduction of vibration and distortion. Integrating wood with solid metal rods has proven to be a combination that works both in principal and practice. Certain elements must eliminate vibrations while others absorb. It is a complex issue to refine and get perfect. Currently Krolo Design products are being professionally reviewed by an Audiogon member, TEAJAY, for Home Theatre Review. It has been an honor to meet him at Axpona Chicago this year and have the opportunity for him to provide his feedback and professional opinion.
We have the Krolo Enhansers for $250 set of three and the Tomo Rack starts at $5,888. As audiophiles we never stop at pursuing the purest of music reproduction.