SH NFX EP-C is a permanent mount endpin preamp system with Nanoflex undersaddle pickup for classical guitar. The battery is mounted in a pouch to the instrument"s side or bottom. Nanoflex pickups do 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. No other pickup technology gives you this high level of sound reproduction. Due to active amplification directly at the pickup and 100% shielding of the entire system, no sound will be lost and no hum created. The EP-C preamp is trimmed to the classical guitar with nylon strings and provides singing, soft trebles and smooth bass. The output is trimmed to avoid any distortion, excludes any overload and provides an absolute clear natural sound. Extremely low power consumption.