19834 📃
Six-page brochure for the SONY WM-20, the Walkman from October 1983. SONY claims it the smallest and lightest Walkman in the lineup - and indeed the body matches the dimensions of an audio cassette. The spread breaks down the engineering: power circuit, ultra-thin BSL motor (brushless, slotless) and a new headphone type. The back page covers specs and accessories: several MDR headphone models, battery case, AC adapter, plus mini speakers SRS-F20 (¥5,980) and SRS-20 (¥4,980) - also cassette-case sized.
- 超薄型BSLモーター - ultra-thin BSL motor (brushless, slotless) - a motor design without traditional stator slots or brushes, which enabled the radical reduction in player thickness
- ドルビーNR - Dolby NR - Dolby noise reduction system: reduces tape hiss during quiet passages without signal quality loss
- 新方式ステレオヘッドホン - new-type stereo headphones - lightweight design with a new mounting mechanism developed specifically for the WM-20 body
| Model | Type | Price |
|---|---|---|
| SONY WM-20 | portable stereo cassette player, Walkman | ¥27,000 |
| SONY SRS-F20 | portable mini speaker for Walkman, cassette-case size | ¥5,980 |
| SONY SRS-20 | portable mini speaker for Walkman | ¥4,980 |
昭和58年10月（1983 October）SM9300063
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