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
Fender Mustang GTX-100 **includes footswitch and expression pedal** | in Andersonstown, Belfast | Gumtree
Fender EXP-1 Expression Pedal – Thomann España
Amazon.com: Fender EXP-1 Pedal de expresión : Instrumentos Musicales
230-1050-000 Fender EXP-1 Expression Pedal for Mustang GT / III / IV / V / Floor Amplifiers