19787 📃
Brochure for the SHARP GF-303ST and GF-303SB boomboxes, marketed as “THE SEARCHER 303” at 69,500 yen, January 1978. One page runs through usage scenarios - parties, cars, outdoors - all under the “11W Sound Play” headline. A feature page breaks down three selling points: the OTL-GTL300 amplifier circuit (11W), APSS one-touch track search, and Multi-Mic Mixing for singing along with several microphones at once. The center spread shows the unit full-width against a black background. The back page covers the smaller Searcher 7000 siblings, a connection diagram, and full specifications.
- APSS（オートマチック・プログラム・サーチ・システム） - APSS (Automatic Program Search System) - one-touch tape program search, Sharp's proprietary mechanism for finding a specific track on a cassette
- OTL-GTL300回路 - OTL-GTL300 - Sharp's proprietary output-transformerless amplifier circuit delivering 11W of output power
- マルチマイクミキシング - Multi-Mic Mixing - connect multiple microphones simultaneously for group singing over a cassette playback
- 2ウェイスピーカー（20cmウーファー＋スーパーツイーター） - 2-way speaker system: 20 cm woofer plus super tweeter
- PLL FM-MPXステレオ - FM tuner with PLL synthesizer and MPX decoder for stereo FM reception
| Model | Type | Price |
|---|---|---|
| SHARP GF-303ST | Stereo boombox, FM/AM tuner, cassette deck, 11W | ¥69,500 |
| SHARP GF-303SB | Stereo boombox, FM/AM tuner, cassette deck, 11W | ¥69,500 |
昭和53年1月（1978 January）1.1S
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