Optonica RT-7100 Stereo Cassette Deck – Rare High-End Japanese Vintage Hi-Fi (1981) Manufacturer: Optonica (Sharp, Japan) Model: RT-7100 Year: 1981–1982 Colour: shampagne Offered for sale is an exceptional Optonica RT-7100, one of the finest cassette decks produced by Sharp under its prestigious Optonica brand during the golden era of Japanese hi-fi. Designed and manufactured in Japan, this premium single cassette deck is highly sought after by collectors for its superb engineering, elegant industrial design, and advanced microprocessor-controlled transport. The RT-7100 features a precision 2-motor transport, Dolby B noise reduction, programmable music search (APMS), automatic program search (APSS), fluorescent peak level meters with Peak Hold, timer recording/playback capability, auto-blank spacing, repeat functions, limiter, adjustable output level, and separate microphone inputs with independent level controls. These advanced features made it one of the most sophisticated cassette decks of its time. Technical Specifications Made in Japan (1981–1982) 2-head, 2-motor precision transport Supports Type I, Type II (CrO₂), and Type III (FeCr) tapes Dolby B Noise Reduction Frequency response up to 18 kHz Wow & Flutter: 0.04% WRMS Signal-to-noise ratio: up to 67 dB with Dolby B Weight: approximately 11.5 kg Condition Please refer carefully to the photographs, which form part of the description. Fully tested and in good working order. Playback, fast-forward and rewind operate correctly. Fluorescent display and all controls function properly. Very good cosmetic condition with only minor signs of age consistent with careful use. Clean interior and exterior. This model is becoming increasingly difficult to find, especially in well-preserved condition, making it an excellent addition to any vintage hi-fi collection. The cassette deck will be carefully packed using professional packaging materials to ensure safe international shipping. Key specifications 2-motor transport 2-head design Supports Type I, II, and III cassette tapes Dolby B noise reduction Frequency response: Type I: 20 Hz–15 kHz Type II: 20 Hz–17 kHz Type III: up to 18 kHz Signal-to-noise ratio: 57 dB (without Dolby) 67 dB (with Dolby B) Wow & flutter: 0.04% WRMS Weight: 11.5 kg (25.3 lb)