Vibraplane was the first or maybe second audiophile grade isolation device, that was around 15 years ago and prompted the landmark Bad Vibes article in Sterophile by Shannon Dickson. Possibly the Seismic Sink was first. Since then there has been a plethora of interesting isolation devices introduced into the audiophile market, including Relaxa magnetic levitation, Mana, Halcyonics, Minus K negative stiffness device, Silent Running, all manner of roller bearing assemblies, Bright Star and similar air bladder systems, Vibrapods, Gingko, not to mention all the DIY devices like bicycle inner tubes, bungee cords, tennis balls, etc.