Stylophone Theremin Portable Touch Sensitive Synthesizer

This portable touch–sensitive synthesiser combines the classic Stylophone metal keyboard interface with theremin–style antenna control, creating a hybrid instrument that responds to both physical contact and proximity gestures. The dual–control system allows players to trigger notes via the traditional stylus–on–metal method while simultaneously manipulating pitch and modulation through a capacitive antenna. Battery–powered operation and compact dimensions make it a genuinely pocket–sized synth that requires no cables or external power to perform.

The main keyboard spans a chromatic range with velocity–sensitive response determined by stylus pressure, while the vertical antenna detects hand position up to approximately 15 centimetres above the circuit board to control pitch bend and vibrato intensity. Onboard sound generation includes multiple waveform options and a low–pass filter with adjustable cutoff frequency. Audio output connects via a standard 3.5mm jack, allowing direct connection to amplifiers, mixers, or recording interfaces. The integrated speaker provides immediate monitoring without external gear, though headphone use preserves battery life during extended sessions.

Features

• Touch–sensitive metal keyboard with stylus–based chromatic note triggering
• Capacitive theremin antenna for pitch bend and modulation control
• Multiple onboard waveform options with adjustable low–pass filter
• Battery–powered operation for completely portable performance and recording
• Integrated speaker for immediate monitoring without external amplification required
• 3.5mm audio output jack for connection to amps and interfaces
• Antenna detection range extends approximately 15 centimetres above unit
• Compact form factor allows transport in bags and jacket pockets