The C1 Wilson Pickup for Cello consists of one single piezo element and provides the very best amplification of an acoustic instrument, without feeding back at any level. C1 is optionally mounted in the bridge to capture the fine balance between the four strings. It has a frequency response of 70 Hz to 30 kHz and even beyond and gives a realistic perfect acoustic sound with the same effect when played pizzicato and arco. C1 is connected to a Switchcraft 121 extension jack and does not need any preamp. Special mounting tools are included with the C1 Pickup set.