Beneath the source
: Describing the sound of a resonance control device is a bit of a misnomer. If the device is working properly, it should not impart any character of its own but rather allow the sound of the component to emerge - minus the effects of unwanted vibration. So when I describe things, keep in mind that I am describing the difference that the isolation device was contributing.
The first word that sprang to mind describing the effect was "tubes" as the illuminating glow that marks the difference between listening to a piece of music and experiencing a performance. The sound became anchored in the mid to lower midrange. Depth was evident but also projection which indicated good preservation of timing information. The footers trade absolutes of transparency and hard edge for palpable solidity and textural definition. There was an analog feel with warmth, dimensionality and incredible presence. The component was interpreting more information effectively and producing a convincing reproduction of the performance. Very much like the best tubes.
There was an absence of etching, especially in the high frequencies. The upper end was not emphasized but emerged unforced and never drew attention to itself. This indicates that the footers were preserving a flat neutral upper response from the source. In the lower midrange and upper bass there was mild warmth. Bass extremes had punch, weight and a wealth of detail. That resolution of information within the bass range contributed greatly to sense of real instrumental presence.