A post yesterday reminded me of another adjective I've never understood - 'vinyl' like. With all the different cartridges and phono preamp variations it can't be tonal, can't be that someone wants clicks, snaps, pops, and tracing noise, can't be the compression involved in recording.
It's really quite simple; it means, flat and black with a small hole in the middle. Some donuts are 'vinyl like'. Manhole covers are often loosely described that way, though their holes are more often towards the edges.
Your post gave me an idea for a descriptor for the manifesto, exclusively for vinyl playback devices and donuts: "Rice Krispies"!