There is no ideal mass and in and of itself a turntables weight is meaningless. The proper mass can only be discussed within the context of an overall turntable design with the critical factor being the type of suspension, if any. You can make an excellent low mass turntable, but the cutting edge designs all seem to be quite massive. That could mean high mass is necessary or it could also mean that it's easier to design and build a high mass turntable than a low mass design of equal sonic merit.
