Altanpsx,
Vibraplane platforms come in passive & active-air isolation versions. both have limitations from a practical point of view. the cheaper passive version relies on a hand-pump to manually pump & level the unit's internal air reservoirs which slowly deflate over time (more on this below). the active-air isolation version needs to be attached to an outboard air compressor which can be impractical for some people (even tho the compressor is reputed to be quite silent & only comes on periodically).
the main problem i have with the passive version is its lack of self-leveling. this has resulted in several "compatibility issues" during my years of ownership. i've had heavy record clamps tilt the entire platform when applied / removed (affects tonearm's antiskate & tracking angle) & thus required frequent platform leveling & re-leveling. this attribute also causes it to be completely incompatible with most linear tracking arms.
all in all, it required considerably more effort than i'm willing to put in (regardless of performance) & i've opted to replace mine with an active isolation platform from Herzan.
Vibraplane platforms come in passive & active-air isolation versions. both have limitations from a practical point of view. the cheaper passive version relies on a hand-pump to manually pump & level the unit's internal air reservoirs which slowly deflate over time (more on this below). the active-air isolation version needs to be attached to an outboard air compressor which can be impractical for some people (even tho the compressor is reputed to be quite silent & only comes on periodically).
the main problem i have with the passive version is its lack of self-leveling. this has resulted in several "compatibility issues" during my years of ownership. i've had heavy record clamps tilt the entire platform when applied / removed (affects tonearm's antiskate & tracking angle) & thus required frequent platform leveling & re-leveling. this attribute also causes it to be completely incompatible with most linear tracking arms.
all in all, it required considerably more effort than i'm willing to put in (regardless of performance) & i've opted to replace mine with an active isolation platform from Herzan.