A blurry closeup of a lava lamp
A wall of guitar pedals in a japanese music shop

Boss Flanger BF-1

A photo of a Boss Flanger BF-1

Boss Flanger BF-1

Manufactured: 1977-1980

The first generation of the Boss BF flanger series. Comes in the same retro casing as the Roland AP-2 Phase II. No Battery option it runs on 9v plug-pack buts seems to sound better with 12v. There is no LED effect on indicator.