Here's the one and only prototype of Roger Linn's Midistudio. It was announced at NAMM in 1986 as the replacement for the Linn 9000. That machine had velocity-sensitive pads, but the Midistudio added sampling, and put the pads into the famous 4x4 grid. This machine was the demo model used by the sales team, and it's for sale in the current Vemia auction - currently for £880. Linn went bust in 1986, the Midistudio was never manufactured, and Roger went to design for Akai, releasing the MPC 60 in 1988. It's great watching design evolve. This has the sliders from the Linn 9000, but the colour from the MPC. The cool removable control panel (a 100ft extension cable would have been available) didn't re-surface until the Akai S6000 from 1998, by which time the hardware sampler was all but dead.