via this auction
"this organ has seen much use in recordings, all the artists that i record with always play on it and love it. because it has such a nice warm tone, it has 3 tones and a vibrato which parameters can internally be adjusted with screw potentiometers, so quite flexible! it also has a drum machine which is really rich with 4 different analog drum sounds much like any of the analog drum synths of the day, these sounds are also adjustable inside the synth with screw potentiometers, so you have a lot of drum sounds just 2 screws away (its layed out really well because old synths were designed to be home serviced).
all works! some crackles in some of the travel of the slide pots but nothing major and with a bit more use might disappear completely! or just a clean.
very similar circuitry to ELKA, HOHNER and other organ manufacturers of the time."
