Not sure if this is known about but have a look at this. https://www.petervis.com/walkmans/Vintage Walkmans.html Many nice articles and in depth analysis of various models including; Sony WM-BF22 WM-4 WM-33 WM-701C WM-B52 WM-BF58 WM-BF64 WM-FX41 WM-FX193 WM-FX251 WM-FX290 WM-FX493 WM-EX17 WM-EX23 WM-EX194 WM-EX562 WM-EX610 WM-EX612 WM-EX674 TCS-310 Toshiba KT-S1 KT-4046 Sanyo MGP9 M3330 M4440 MGR59 MGR 80 M-G12 MSP-8 Mini Speakers Panasonic RX-1950 Stereo Cassette Recorder RQ-SX20 / RQ-SX10 RQ-L480 Hitachi CP-200RUK Goodmans Goodmans PM95s Stereo Recording Walkman SilverCrest USB Audio Cassette Tape Converter to MP3 Alba Alba CCP1 AM/FM Radio Cassette Player Bush Bush PSR358 Crown Crown SZ-31 Misc SPC-088 Troubleshooting Sony Walkman 4 beeps Shutdown Walkman Drive Belt Certainly worth have a good rummage around. Artices also cover other tech like vintage calculators, cassette decks, cameras. And...happy new year.
