The Yamaha RM II aka Yamaha Rockin' Magic II is the predecessor of the Yamaha RM-PRO. The Yamaha 1986 Catalog says the following "The new Yamaha Rockin' Magic II locking vibrato system adds a new dimension to the concept of radical pitch bending. The low profile bridge allows for right handed muting techniques without being hindered by bulky hardware. String locks at the nut and on each individual saddle ensure perfect tuning stability at all times. Individual fine tuners on each string provide for minute pitch adjustements while playing. The Rockin'Magic II uses standard ball end strings and is capable of both upward and downward pitch bending."
