#cartridge.electro-acoustic_transducer__pickup  an electro-acoustic transducer that is the part of the arm of a record player that holds the needle and that is removable
  supertype:  #electro-acoustic_transducer  a transducer that converts electrical to acoustic energy or vice versa
  subtype:  #crystal_pickup  a cartridge in which an output voltage is produced by the vibration of a piezoelectric crystal
  part:  #stylus
  part of:  #record_player__phonograph  machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically
     part of:  #audio_system__audiosystem__sound_system__soundsystem  a system of electronic equipment for recording or reproducing sound

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