Graph Tech PЕ-0400-00 пассивный регулятор громкости KIT
The PE-0400-00 lets you connect ghost saddle pickups directly to the supplied stereo 1/4" output jack. One side for your magnetic pickups and the other side for the ghost pickups. No batteries required, although we recommend an outside piezo preamp for ultimate acoustic tone.
The Passive Volume Kit includes a high-impedance volume pot and other components that help impedance-match your acoustic pickups to your amp, to prevent loss of high frequencies (muffled sound).
The capacitor is used to prevent the loss of higher frequencies as a pot is turned down, it is sometimes accompanied by a series or parallel resistor, to limit the amount of treble being retained and to match it to the pot's taper. They are not necessary in every install.
The Passive Volume Kit Includes: