AC-90: Recommended Foot Switch May 24, 2023 03:04 Updated Follow The following are compatible footswitches for the AC-90: Boss FS-5U BOSS FS-5L (Mute On/Off) BOSS FS-6 Related articles AC-100: Recommended Foot Switch How do I find/enter my Serial Number? TD-20: Where is the Serial Number? PCS-31: PCS-31 Product Description VE-5: Compatible Footswitches