#audio_system__audiosystem__sound_system__soundsystem  a system of electronic equipment for recording or reproducing sound
  supertype:  #electronic_equipment  #system.instrumentality
  subtype:  #recording_system  #reproducer
  part:  #radio-phonograph__radiophonograph__radio-gramophone__radiogramophone  electronic equipment consisting of a combination of a radio receiver and a record player
     part:  #radio_receiver__radioreceiver__receiving_set__receivingset__radio_set__radioset__radio__tuner__wireless  an electronic receiver that detects and demodulates and amplifies transmitted signals
        part:  #amplifier  electronic equipment that increases strength of signals passing through it
        part:  #detector  electronic equipment that detects the presence of radio signals or radioactivity
        part:  #demodulator  rectifier that extracts modulation from a radio carrier wave
  part:  #record_player__phonograph  machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically
     part:  #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
        part:  #stylus  a sharp pointed device attached to the cartridge of a record player
           part:  #diamond_point__diamondpoint  a very hard small point made from a diamond
     part:  #radio_chassis__radiochassi  a chassis for a radio receiver
     part:  #record_changer__auto-changer__changer  an automatic mechanical device on a record player that causes new records to be played without manual intervention
     part:  #tone_arm__pickup__pickup_arm  mechanical device consisting of a light balanced arm that carries the cartridge
     part:  #turntable  a circular horizontal platform that rotates a phonograph record while it is being played
  part:  #tape_deck  electronic equipment for making or playing magnetic tapes (but without amplifiers or speakers); a component in an audio system
     part:  #tape_drive__tape_transport__transport  a mechanism that transport magnetic tape across the read/write heads of a tape playback/recorder

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