Not sure how much evidence there is, but vibration damping is always beneficial. 

My DAC is balanced on two stillpoints on a base which in turn is sitting on steel wires tightened across the top of my rack..

Subjectively, I believe this gives more clarity to the sound.

I haven’t bothererd measuring, nor testing, etc. The stillpoints were lying around unused and the top of the rack is prqactically the only available placement for the DAC given its size (20 x 14) and weight (around 30kg - 65lbs).

@mooshead89

You have the initial responses that are all aligned ….it is simply basic and intuitive that digital noise / jitter is the interference bane  of digital audio, and of DACs specifically.

thus is they driving force behind introducing more “space” design between the internal boards influencing more isolation in analogue from digital sections , as well as emphasizing physical means to reduce and isolate vibration 

https://youtu.be/E4hYwHoNDVw