Electronics e.g. preamplifier, supplying and regulating device for e.g. stringed instrument, has case connected to sector supply cable, and stereo female plug permitting to recover audio signal from musical instrument

摘要

The device has a plastic or metal case (1) connected to a 230 volts sector supply cable (6). A potentiometer-selector (2) permits to choose a desired voltage. A stereo female plug (4) permits to recover an audio signal of a musical instrument and to transmit a supply voltage. The plug (4) is connected to the instrument by a stereo cable. A mono female plug (3) permits to recover the audio signal of the instrument.