【Overview】 ・This item is a repaired and restored piece of non-functional equipment from over 40 years ago. While all functions have been repeatedly confirmed to work, it is being sold as a junk item due to its age. Due to the recent increase in return scams, we generally do not accept returns. Please understand that this item is sold as-is, with no claims or returns. As an exception, we will provide free repair services as needed, provided you cover the round-trip shipping costs. 【Product Description】 Product: Stereo Cassette Deck Manufacturer: Technics, Matsushita Electric Industrial Model No.: RS-B21 Release Date: Around 1983 Price: 29,800 yen 【Appearance】 ・Both the chassis and front panel are clean and free of dents. However, the display sections for the right-side volume, tape selector, input selector, etc., on the front panel are faded, so it is listed as a defective item. Of course, this does not affect the operation at all. 【Repairs and Adjustments】 ・Disassembled and cleaned most of the front and rear drive sections, applied lubricant. ・Ultrasonic cleaning of the recording volume with ethanol. ・Repaired the cassette loading mechanism. ・Fine-tuned the motor speed. ・Adjusted the playback and recording output levels. ・Adjusted the playback/recording head azimuth, demagnetized, and cleaned. ・Cleaned the pinch roller and capstan. 【Operation Check】 ・All operations, such as recording, playback, pause, fast forward, and rewind, have been confirmed to work. ・The Technics deck belts are durable and show no signs of deterioration, so they have not been replaced. 【Sound Quality Check】 ・Wow and flutter is 0.09%, which is very good. As far as listening to commercially available music tapes, I think it sounds good enough for enjoying music, considering it's a cassette deck over 40 years old. (Some tapes may not be recordable or playable depending on their condition.) ・Equipped with a 3-position tape selector with a metal position. ・The playback/recording head uses the MX head, which is highly regarded among Technics decks, and the high frequencies extend well. 【Accessories】 ・One test tape used for recording, playback operation check, and adjustment. 【Notes】 ・The resin parts have aged and deteriorated, which can cause malfunctions, so please use it for about 1-2 hours a day. ・The playback speed (pitch) can be finely adjusted with the semi-fixed resistor in the motor control circuit, but it requires opening the chassis.