Sony 464

The Sony 464 reel-to-reel tape deck, produced in Japan between 1962 and 1966, is a well-designed, portable stereo tape recorder notable for its robust build and versatility. It supports tape reels up to 7 inches in size and operates at two standard tape speeds: 3 3/4 ips (9.5 cm/s) and 7 1/2 ips (19 cm/s), allowing users to choose between higher fidelity or longer recording times.

Key technical features include a 1/2 track stereo tape system with four tracks (two channels per direction), making it capable of stereo recording and playback. The deck is equipped with high-quality magnetic heads and features a tape bias frequency of 60 kHz, optimizing recording quality. It uses a synchronous motor drive system, ensuring steady tape transport and precise speed control.

The Sony 464 includes built-in stereo preamplifiers and offers features such as sound-on-sound capability, making it suitable for language learning and music training applications. It also has push-button track selection and tone controls to tailor the audio output.

Mechanical controls include play, stop, rewind, fast-forward, and record functions, complemented by analog VU meters for accurate monitoring of recording levels. The deck houses built-in stereo speakers, enhancing portability and convenient monitoring without external amplification.

Overall, the Sony 464 represents a high-quality portable reel-to-reel recorder from the early 1960s, praised for its solid construction, sound fidelity, and user-friendly features aimed at both home and educational markets. It stands out as an early example of a fully self-contained stereo tape recording system with practical innovations for its time.