Metasonix/Serge Random*Source-style 4x4

RK7 Thyratron VCO and RK3 Mangler.

The RK7 uses a 5696 thyratron and 5702 subminiature pentode. Both are military surplus tubes used in avionics. The 5696s are still findable but getting scarce, and needs a higher plate voltage. The RK7 tracks Hz/V just like previous iterations of the Thyratron VCO (R-55, the S-1000's oscillators, etc.). The 'octave' switch raises the pitch of the VCO about two octaves. The 'sin/saw' switch allows the ability to switch between two very crude variations of a sine and sawtooth waveform. The 'drive' knob allows clipping of the pentode, just like in the R-55. And the 'tune' knob enables master tuning.

• 40 mm Depth

This Module is an early prototype, a concept in development, or an AI mockup