This is a tube based Voltage Controlled Amplifier / timbral gate.

[CLEAN/DISTORT]

While in the [CLEAN] mode the module basically operates as a VCA, it does add a small degree of distortion to the signal at higher input levels.

Switching to [DISTORT] mode emphasises the distortion. How much distortion depends on how hard it is driven.

Add feedback and it begins to oscillate, synchronizing, to some extent, to the incoming signal.

In the 3.5mm version, feedback is obtained simply by removing any patch plug from [IN 2]. In the 4mm version you will need to place a patch between [OUT] and [IN 2] (or [IN 1] if it is not being used).

All this while running on a standard synthesizer power supply, with no extra heater supply required.

Sample Sounds

BuildGuide