Karplus-Strong Synthesizer

Pluck is a free Max for Live device that pays homage to the classic Karplus-Strong method of simulating an acoustic plucked string instrument.

Revisited Algorithm

Pluck is based on the “Digitar” algorithm by Kevin Karplus & Alexander Strong, an absolute classic in digital audio synthesis. Using a tuned delay with feedback, an impulse generator actuates it, causing an oscillation that sounds reminiscent of a guitar string.

This method has since been refined and used in a myriad of different electronic instruments, yet the simple original is still full of charm and beautiful tones.

While staying true to the simplicity of the original structure, Pluck also introduces modern digital filters and a variable impulse generator for a wider range of timbres and tones. It’s a six-stringed homage to a beloved algorithm and sound.

Pluck is yours for free

Get Pluck

Pluck is a Max for Live device and require at least Ableton Live 10.1 with Suite (or Max for Live) to use.

10% of our proceeds go to a mutual aid fund or nonprofit - rotating every few months. If cost is a barrier for you, please write to us at

See our currently supported fund on our About page.

Frequently Asked Questions

Does Pluck run in a DAW other than Live?

No, sorry!

Will there be a VST? Or iOS version?

No plans at the moment.

I have a feature request... And I need help!!

Send an email to