Onboard preamp allows you to choose between magnetic pickups magnetic/piezo blend or piezo pickups only with the flick of a switch.

Control-X Preamp The Ctrl-X onboard preamp combines traditional passive magnetics with piezo bridge pickups for immediate and effortless versatility. With the Ctrl-X, you can mix an acoustic piezo signal with your magnetic pickups without active circuitry ruining the sound of your magnetics. Choose between magnetic pickups, magnetic/piezo blend or piezo pickups only with the flick of a switch.