Created by Erica Synths & Richie Hawtin, the Bullfrog is an educational electronic music instrument designed to captivate and inspire.
It is a classical subtractive synthesiser consisting of several “modules” for sound generation – VCO, NOISE GENERATOR - and treatment – VCF, VCA/DELAY, as well as “modules” that generate control and modulation signals to control them – ENVELOPE GENERATORS and SAMPLE & HOLD.
The Bullfrog will not make sound on its own unless it is patched – using eurorack patch cables to interconnect the “modules” or by inserting voice cards that create internal connections between the “modules” in a specific way and add extra functionality, like sampler/looper, sequencer, groovebox, etc. This approach helps to understand the functionality of a subtractive synthesiser and the principles of sound design with instruments like these.

A comprehensive user manual is available to accompany your learning process.

Key Features:

• Collaborative design with international DJ legend Richie Hawtin
• Ergonomic form factor and streamlined interface make for intuitive, educational use without compromising production possibilities for seasoned synthesists
• Analog architecture utilizes subtractive synthesis for indelible tone-crafting and CV-controlled wave shaping
• Deep modulation possibilities abound with FM, as well as two envelope generators that can be individually toggled to run freely or loop indefinitely
• Module-style design means straightforward patch-building
• Onboard mixer lets you introduce noise signal and more for diverse texturizing opportunities
• Dual-function VCA and delay, sample & hold circuit, and VCF expand sound design with deep CV and audio integration
• Onboard clock divider means painless rhythmic management
• Voicecards are included to introduce new sonic possibilities while expanding functionality unique to each card: 3 blank for DIY, acid bass line, sampler-looper, and groovebox
• Flexible connectivity suite includes USB-C, 5-pin DIN MIDI input, gate input, CV input, 3.5mm headphone output, and 1/4-inch audio output for versatile interoperative integration