STEREOPHONIC TUNER DISPLAY GRAPHIC EQUALIZER ALL-PURPOSE LASER DISC PLAYER LASER PHONOGRAPH CASSETTE RECORDER DOUBLE-TAPE RECORDER FOUR SOUND TRACK CIRCLE STEREOPHONIC AMPLIFIER FOUR SOUND TRACK CIRCLE STEREOPHONIC ALL-PURPOSE AMPLIFIER CIRCLE STEREOPHONIC FOUR SOUND TRACK AMPLIFIER NUMERAL CIRCLE SOUND HOUSEHOLD THEATER PRODUCT NUMERAL CYCLE FIVE SOUND TRACK HOUSEHOLD THEATER PRODUCTS DOUBLE SOUND TRACK AMPLIFIER FULL COMPUTER FLUORESCENT DISPLAY GRAPHIC EQUALIZER FULL-FUNCTION LASER PHONOGRAPH WITH PICTURE PLANE FLUORESCEN FLUORESCENT DISPLAY TOUCHING DOUBLE-TAPE RECORDER FRONT-AND-BACK STAGE MERGING POWER AMPLIFIER VACUUM TUBE TRANSISTOR FRONT|REAR JOINTED AMPLIFIER ECHO STEREO VACUUM TUBE TRANSISTOR FRONT-AND-BACK STAGE FISSION AMPLIFIER PURE BACK STEREOPHONIC POWER AMPLIFIER STEREOPHONIC ANTELOCATION CONTROL AMPLIFIER FOUR SOUND TRACK MULTI-FUNCTIONAL CIRCLE POWER AMPLIFIER PURE FRONT STAGE FISSION AMPLIFIER HIGH-GRADE CABINET ACOUSTIC EQUIPMENT