This is not a new thing though, it's complete myth of course but it's been commonly accepted for decades. Wood is warm, possibly dull, but it depends on the type of wood plus unknown unknowns.
Glass is bright or sterile and metal will ring. The last effect was taken to extremes with the Mana Acoustics stands which were metal (stainless steel) and glass, the metal stands being tightened expertly on site to give the 'Mana Effect' which some suggested was due to them tuning the frequency of the ringing to compliment the sound of the equipment sat on it.
Not just turntables, which would be fair enough, we are also talking amps, DACs, CD players, tape decks, phono stages. Even power strips and power conditioners are claimed to work more effectively when sat on it.
This was all back in the late 1980s when the foo industry was still in its infancy. Mana went bust eventually but their stands live on and still fetch good money on the secondary market.
MANA ACOUSTICS / JOHN WATSON: Howard Popeck speaks at length to people with interesting things to say: Mana Acoustics’ John Watson – the complete interview | Audiophile News & Music Review
How did your interest in music reproduction start John? I guess I was always into music from a very early age. My Father was an electrical and mechanical engineer and used to build his own Hi-Fi back in the Fifties, so music played a big part in my formative years.
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