DESCRIPTION:
This is a combination of two of the onboard effects from the Vox Starstream guitar.
The fuzz is a version of the Vox Tonebender Mk I, which is basically a Fuzz Face with some different component values and silicon transistors.
The tremolo is the famous Vox Repeat Percussion. This uses a (now obsolete) unijunction transistor and has a characteristic 'bouncy' component to its chopped-tremolo effect.

Demo played on Indie LP copy into Orange Crush 35B combo.