No info about availability.
passive strummer
Modeled after the Error Instruments Raw Spring. https://www.errorinstruments.com/a-50804780/welcome/raw-spring-nano-noir/
A spring with a piezo contact mic. Works well with a resonator like Rings.
Included in 3 Racks, 2 are public:
Antelope Audio Orion 32 Plus Gen 3
Bosphorus 22" Flat Crash Ride Cymbal
Pearl S1330B/C103
Nagra IV-S
Aeolian Duo Art Player Piano
Line 6 Helix Floor