The Nanoflex pickup, according to Shadow, "does not only take the vibrations of the strings like common undersaddle pickups. Nanoflex senses the vibrations of the strings and the body of the instrument simultaneously. This gives the equivalent of having a condenser-microphone mixed with an undersaddle pickup. The supplied NFX 2.3-A (different sizes will be available) is very flexible, under a millimetre in thickness and 2.3mm in width. Its covered in a black rubber material, and before this turns into silver flex screening there is another unique part of the design: an ultra-small preamp that, "amplifies and protects the sound signal directly on the pickup. Unlike other pickups, the Nanoflex pickup signal is not passing through even a single millimetre of the wire and therefore eliminates environmental disturbances before the connection cable. At the end of the cable is a mini jack plug that plugs directly into the relevant Sonic preamp.