Boss BF-3 Flanger Guitar/Bass Pedal - $88 (Belle Mead)

Soaring stereo Flanging with onboard tap-tempo and low noise ratio, designed to work with either guitar or bass (via separate inputs).
Mono out option.
Selectable ultra-mode, gate/pan mode, and momentary mode to create a wide variety of crests and waves.
Get creative and you can use this pedal to simulate chorus, tremolo, and vibe as well as flange effects! Lightly used but in excellent condition with original box https://youtu.
be/Ol6JrB9DYew?si=JkcVLKH9Xm0zag4M