【Overview】 ・This item is a repaired and restored 50-year-old junk item. Although all functions have been repeatedly confirmed to operate normally, it is being sold as a junk item due to its age. Due to the recent increase in return scams, we are unfortunately unable to accept returns. Please understand that this item is sold "no claims, no returns." 【Product Description】 Product: Stereo Cassette Deck Manufacturer: Sony Model No.: TC-4300SD Release Date: 1975 Price: 72,800 yen 【Appearance】 ・Both the front panel and the body are clean, but there are some small scratches. In my subjective opinion, it is in good condition considering its age. 【Repairs and Adjustments】 ・Complete disassembly, cleaning, and repair of the front and rear drive sections, and reapplication of grease. ・Complete disassembly, cleaning, and repair of the head block. ・Cleaning of the recording and playback volume controls with ethanol ultrasonic cleaning. ・Replacement of the capstan, auto-shut-off, and counter belts. ・Repair of the playback, pause, fast forward, and rewind mechanisms. ・Repair of the full auto-shut-off mechanism. ・Adjustment of the servo motor speed. ・Adjustment of the playback and recording VU meter sensitivity. ・Adjustment, demagnetization, and cleaning of the record/playback head azimuth. ・Cleaning of the pinch roller and capstan. 【Operational Check】 ・All functions, including recording, playback, pause, fast forward, rewind, Dolby circuit, and timer standby, have been confirmed to operate. 【Sound Quality Check】 ・Based on listening tests with commercially available music tapes, I believe the sound quality is sufficient for enjoying music as a 50-year-old cassette deck (wow and flutter 0.16%). (Recording and playback may be poor depending on the condition of the tape.) 【Included Accessories】 ・One test tape used for confirming and adjusting recording and playback operations. 【Important Notes】 ・Please use the device for only 1-2 hours a day, as the resin parts have aged and may cause malfunctions. ・The playback speed (pitch) can be finely adjusted with a semi-fixed resistor in the servo motor circuit, but it requires opening the chassis.