Jennings Univox J6 (1953)
The Univox J6 is a Tube/Valve synthesiser that was designed and built in Dartford, Kent in the 1950s. Very similar, but still different to the Clavioline. There are a series of decay circuits that give it some pre-assigned note envelopes, and also a repeat function can be employed when using the Vibrato tabs, and tabs C and D.
Tabs E F G H K L M are all tone filters which interact with eachother in various ways. Tabs A and B are Vibrato width / intensity switches. On the right there is an octave switch - it will move up one and down one.
The J6 also allows for a sub bass tone to be added, as well as various percussive envelopes. A volume knee lever fits in underneath the keyboard and we also have a custom built stand for this one so it can be played as originally intended.
This keyboard was overhauled and restored by Steve Christie a few years ago, and a Line Out was added.
A lovely touch in this particular example is the Univox name plate that glows green when the unit is on.
Here is a short composition by Steve Christie featuring multi tracked J6: