TD-R621 stereo cassette deck with quick reverse function, featuring Dolby HX Pro technology. - Model Name: TD-R621 - Function: Quick Reverse - Type: Stereo Cassette Deck - Audio Technology: Dolby HX Pro Headroom Extension System - Design: Black Finish - Meters: LED Meters I've had this stored in a box for a while. I tested it for this listing. Recording and playback work, but fast forward and rewind do not function properly, with the tape slipping. Other functions work without issue. The exterior has scratches on the top panel, small marks, and faint imprints from other units that were placed on top. Recording quality is excellent, with minimal muddiness or speed fluctuations. This is my personal assessment. I cleaned the head and rollers with a dedicated cleaning solution. I also demagnetized the head. I believe it can be used comfortably. The last photo shows the cleaning solution and head demagnetizer I used. Please note that the cleaning solution and head demagnetizer are not included. I believe this is a top-tier model among single-reverse decks. I am confident in its sound quality and stability. Thank you.