BL3207 BBD chip, new version of the MN3207. DIP8 case, Beilling semiconductor
Mainly used in:
- Maxon CD-550 (Chorus), Maxon CS-9 Series (Chorus)
- Guyatone MC-3 (Chorus), Guyatone FL-3 FL-9 (Flanger)
- Zombie Chorus
- Boss BF-1 (Flanger) Boss CE-3 (Chorus), Boss DC-2 Dimension C (Chorus), Boss VB-2 (Vibrato),
- ETI Chorus / Flanger Unit.