JACK is a wireless guitar headphone amplifier – a system that offers unlimited tones and effects, along with a truly cable-free practice experience. The jack plug transmitter and wireless earbuds pair with the smartphone app to bring new dimensions to your practice sessions.

The physical elements of the system are designed with simple tactile controls to keep the focus on playing the guitar. The jack plug's touch-capacitive tip switches between the user's active sound presets, letting them move seamlessly between tones mid-song. Gesture controls on left and right earbuds enable phone-free volume adjustment and backing track navigation.

Within the Jack app, users can build and fine-tune their sound presets with powerful tonal controls, limitless gear combinations and simulated effects. Emulators for real-world guitars, amplifiers, effects pedals and the distinctive sounds of guitar legends are available for purchase in the in-app store. Integration with music streaming services allows users to play along to tracks from their own music library and record their practice sessions for self-improvement.