It's a work in progress. The Fender expression pedal and multi-effect switcher control my Fender Mustang GTX-100 amp—I use the reverb and modulation effects in the amp. Feedback welcome! : r/guitarpedals
Zoom Fp-02m Expression Pedal, Designed To Be Used With All Zoom Multi- effects Processors : Target
Amazon.com: Zoom FP-02M Expression Pedal, Designed to be Used with All Zoom Multi-effects Processors Including the G3n, G3Xn, G5n, B3n, and More : Musical Instruments