Andre, I'm not sure I would agree with your friend's contention. I have never owned a TT w/ magnetically suspended platter, but have had two w/ air-suspended platters, and they had no problem w/ bass.
It could be that a magnetic suspension alone allows too much "bounce" in the platter which indeed would reduce bass. Air suspension platters are "rock solid" as long as the platter is sufficiently heavy.
I know nothing of liquid suspension platters.
It could be that a magnetic suspension alone allows too much "bounce" in the platter which indeed would reduce bass. Air suspension platters are "rock solid" as long as the platter is sufficiently heavy.
I know nothing of liquid suspension platters.