Also knows as a “VCO,” this is an oscillator whose pitch (or frequency) is controlled by an input voltage. In an analog synthesizer, for example, pressing different keys produces different voltages, which then drive the oscillator circuit to produce specific pitches (notes). Modern (digital) keyboards don’t work this way anymore, but back in the days of analog synthesizers it was all done with voltage.
Related Articles:
Recording Shootout: $500 vs. $2,500 vs. $10,000 vs. $100,000 Rigs
1
Recording Shootout: $500 vs. $2,500 vs. $10,000 vs. $100,000 Rigs
We Checked Out Mirador's Live Rigs
2
We Checked Out Mirador's Live Rigs
Kanto Audio Ora 4 Powered Bookshelf Speakers Overview
3
Kanto Audio Ora 4 Powered Bookshelf Speakers Overview
EVH Wolfgang Special Demo Starring Ben Eller
4
EVH Wolfgang Special Demo Starring Ben Eller
Explore the Best of Guitar Gallery – May 2026
5
Explore the Best of Guitar Gallery – May 2026
Tromana CL300 Student Clarinet Demo
6
Tromana CL300 Student Clarinet Demo
Tromana FL300 Student Flute Demo
7
Tromana FL300 Student Flute Demo
Top Portable/Battery-powered Amps of 2026
8
Top Portable/Battery-powered Amps of 2026
Inspiration. Information. Passion.
Being music makers ourselves, we love geeking out on all things gear. From the tweakiest techniques to the biggest ideas, our experts work hard to constantly supply inSync with a steady stream of helpful, in-depth demos, reviews, how-tos, news, and interviews. With over 28,000 articles and counting, inSync is your FREE resource for breaking news, reviews, demos, interviews, and more.