Roland Double Beat AD-50 Effects Pedals allowing to turn the effect

allowing to turn the effect on and off during a crescendo

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

This item:

and even the box itself is in good order

Voltage is switchable 110v-240v

Roland Double Beat AD-50 Effects Pedals allowing to turn the effectVery 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