Shadow Nanoflex   double bass preamp, with bridge+fingerboard input, combined or separate outputs, 9V not included

Shadow Nanoflex   onboard preamp with NFX piezo, endpin jack, 3v battery, volume and tone, flat case

Shadow Nanoflex   onboard preamp/tuner with NFX 6 pickup, each string volume and pan, for acoustic guitar

Shadow Nanoflex   onboard preamp/tuner with NFX 6 pickup, each string volume and pan, for classic guitar

Shadow Nanoflex   flexible polymer transducer, NFX, for bridge mount, 2.3mm wide