Roland Double Beat AD-50 Effects Pedals The rectifier should be a

The rectifier should be a GZ-34 Mullard (the equivalent JJ is not be up to the task)

For a good run-down of the features of this synth the Vintage Synth Explorer Korg MS2000 page is a good place to start

Voltage is switchable 110v-240v

specifically designed for two people to use together

In excellent working order

Roland Double Beat AD-50 Effects Pedals The rectifier should be aVery versatile fuzz wah with three fuzz settings cleans up really well when you back the volume off on your guitar great wah voicing. These rare units were amongst the earliest pedals made by the Roland Corporation in Japan in the mid seventies. This AD 50 is for sale in good condition it has some signs of age including scuffs to the finish, mostly on the edge of the foot pedal and casing and the feet and some screws are missing. Click on the photos