Tri-Vibe

From the vendor

A simple no-bias phaser and vibrato circuit that uses commonly available parts.

The Runoffgroove Tri-Vibe is a vibrato & phaser circuit that is a great deal simpler than the comparable vintage circuits. Unlike most vibrato implementations, no BBDs are used, and instead the Tri-Vibe’s topography is much more similar to a phaser using OTAs, but with an LFO that has been optimized for the vibrato effect.

The result is true pitch vibrato—not just the deep phasing that is often called vibrato in circuits like the Univibe. However, by mixing the dry signal back in via a toggle switch, the Tri-Vibe can achieve more traditional phaser tones similar to two-stage phasers such as the Phase 45.

The Aion FX version of the Tri-Vibe is a direct adaptation of the original Runoffgroove circuit with no modifications, just some additional power filtering.

Note: This project uses a type of capacitor that has been temporarily discontinued by WIMA. Please see our news article about the issue and the substitution spreadsheet for project-specific recommendations. We are stocking a limited supply in the mean time. The build document has not yet been updated to reflect this.