Yamaha RA50 Vintage 50watt Keyboard amplifier. Mid-70s. On wheels and framed by two chrome pipes that are practical and can be set in two different heights and angle adjusted with the practical screw system. 50 watts (130 watts maximum power consumption). The speakers have in addition to the normal full-range speaker a rotating central tweeter or a rotating pulley ('Leslie speaker'). The highlight: the speed of rotation can be adjusted continuously. The RA 50 shines and not only at an organ amplifier for Fender Rhodes there is no better alternative.
