42hp System


now on

Mobile. Muse.

Manufactured, hand-assembled and calibrated to the highest quality specifications in Vienna, Austria.

100% analog self-sufficient, musical instrument that can be integrated into any configuration – be it in a standalone or modular fashion.

“…Its been one of my lead voices for a week now. that spot is usually reserved for my macbeth dual VCO’s.
’nuff said…”

– Colin Benders aka Kyteman


Voltage Controlled Oscillator


now on

Gentle. Giant.

Engineered around a discrete core with a dedicated, self-oscillating Low-Pass Filter this VCO offers state-of-the-art performance, unparalleled vintage timbre and unique signal-shaping possibilities.

Throughout the design and development process we were free to experiment with any imaginable set of features focusing on a self-contained unique voice with an astonishing Low-Pass Filter, a built-in VCA and complex signal-shaping circuitry.

“…The Bateleur VCO from birdkids is an extremely rich oscillator, with lots of flexibility to create a wide variety of different sounds. Excellent for FM and built like a tank, highly recommended…

– Richard Devine (@RichardDevineMusic)


The entire interface is streamlined for intuitive operation and maximum efficiency with large, distinctive, performance-friendly knobs and dichromatic labelling making it both a player’s instrument and studio workhorse.

TheBateleur VCO mkII

Discrete core

An incredible amount of innovation went into designing a discrete Core capable of very decent tracking and temperature stabilisation while retaining the unique sonic DNA and tonal capabilities of 100% analog, voltage controlled circuitry.
The resulting design – elegant despite inherent complexity is also considerably less noisy and less susceptible to temperature drift than it’s vintage forefathers.

Standalone Filter

At the center of the signal-flow is a dedicated, self-oscillating, voltage controlled Low-Pass Filter tracking 1v/oct.
The Filter is one of the principal parts of TheBateleur VCO, allowing timbral control over the fundamental Waveforms and external signals however at the same time also an eccentric standalone voice in its own right once in the self-oscillation position.

Multimode Modulation

What would a VCO be without wave-shaping qualities?
Our take on Through-Zero FM allows for an entirely new range of sounds.
It’s more like a dedicated “DX”-style unit – literally at the flick of a switch – bells, chimes, metallic percussion – you name it!
Wanna Sync? You got it. The upper position of the modulation switch will take you there.

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