Isolation feet/cones for PS Audio NuWave DSD DAC

Non-audiophile approved roller bearing alternative....

https://www.amazon.com/gp/product/B00S1N47G6/ref=od_aui_detailpages01?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B000GA802O/ref=od_aui_detailpages00?ie=UTF8&psc=1

I’m going to give the DH a try. PS Audio uses a large toroidal transformer in this small device.

The rubber caster cups ghosthouse suggested are too soft, but a cheap alternative is available---chrome nickel plated, bowl shaped, drawer pulls. Screw each onto a little block of mdf or plywood, or a trio onto a small sheet of same.

@bdp24 - Curious what you mean by "too soft"...
Too soft as in won’t adequately act as a conduit for vibration? or too soft w/respect to deformation under the load of a component??

If the latter, not sure that is the case. Each cup can support up to 500# (so the product literature says) and the cups are some sort of rigid, hard plastic, not soft rubber. I have on in hand.  Only the bottom O-ring providing "grip" is rubber.

I do like your concave drawer pull idea. Another possibility is an "acrylic dimple block" used for displaying baseballs, mineral spheres, decorative eggs, etc. The "dimple" is a concave depression that can accommodate a bearing. They come in various sizes.