Goldfinger

A low-profile passive matrix mixer you play with your finger, turning simple signal routing into a hands-on performance tool. Its six bidirectional jacks and touch map let you mix and distribute signals by moving across a grid of finger-sized regions instead of using traditional knobs or switches.

Music Thing Modular says it is not hifi and can add bleed, noise, and distortion, which makes it better suited to experimental patching than clean studio routing.

The real draw is the tactile feel of it. The resistance of your skin is what makes the circuit work, so touch pressure, finger dryness, and even wet fingers can change how it responds. Audio and pulse signals work well, and the surface gold is real pure gold, only one hundred atoms thick.