The Entubulator is a sort of polymorphic vacuum tube module. Because it's built around a beam deflection tube, it's effectively an analog multiplier and a saturable tube amp at the same time. All the tube's inputs are accessible so you effectively have arbitrary circuit topology. Anything can be an audio input, a CV input, or a constant. As at zombo.com, the only limit is yourself.

The Entubulator, at its simplest, can be a VCA with tube distortion — just put audio into the control grid, like a regular tube amp, and CV into the deflector offset. It's also possible to multiply a signal by itself, creating a complex range of harmonics, or multiply two different notes together, which makes a different character of sound for every interval. Most importantly, it's easy to set up to operate away from the linear region of the tube, making a parametric wave folder.

Warning

Two Entubulators connected together have been observed to self-oscillate at audio frequencies in a highly unpredictable manner. We accept no liability in the event of Entubulator inception.

Specs

Power budget

• +12V: 60 mA
• -12V: 60 mA
• One Illuminox Prime connection for plate and heater

Width

Max depth

Tube supplied

Tubes compatible

• 6AR8
• 6JH8
• 6ME8

Demo

Further reading

PDF manual

Mini demo video

Perfect Circuit demo