Brochure for the SHARP GF-305ST The Searcher 305 boombox at ¥76,800, September 1978. The unit is aimed at language learners and karaoke enthusiasts rather than audiophiles: APSS auto-cue to jump to any track, built-in echo, a Duet Sing mixer for singing along with recordings, and variable playback speed for working with foreign-language material. The center of the brochure folds out to show the unit at full scale. The back page is the connection diagram and complete technical specifications.