Check the listing for details. Casio Dimension Shifter Wireless Expression Controller. Condition: New. Listed at 299.99 USD. Let Your Playing Shape the Music Sweetwater guitarists are always looking for new ways to add expression without locking themselves to the pedalboard, and the Casio Dimension Shifter delivers exactly that. This strap-mounted, wireless expression controller turns natural guitar movement into real-time control over your favorite effects. A compact transmitter attaches to your guitar strap and senses motion as you pull or move the neck, sending expression data wirelessly via Bluetooth to a receiver pedal on your board. From there, the receiver connects via standard TRS to an effect’s EXP input. The result is intuitive, hands-on control over volume swells, wah sweeps, delay depth, modulation, or even preset changes — allowing you to stay fully engaged with your performance.