Sony 261

The Sony 261 reel-to-reel tape deck is a vintage portable analog tape recorder designed primarily for mono full-track recording and playback. It supports tape speeds of 3 3/4 and 7 1/2 inches per second (ips), providing a balance between recording quality and tape usage duration. The maximum reel size supported is 7 inches.

This deck features a full-track mono configuration with Permalloy heads, a material known for good magnetic properties and durability, ensuring reliable signal recording and playback quality. The tape transport mechanism is built around a single motor with capstan and pinch roller for steady tape motion, supplemented by manual controls for tape handling such as play, rewind, fast-forward, pause, and record.

In terms of audio performance, the Sony 261 offers a frequency response typically spanning from about 40 Hz up to 15 kHz at the higher speed of 7 1/2 ips. The signal-to-noise ratio is in the range expected of consumer tape decks from the era, providing decent audio clarity aided by the analog electronic design. It includes an analog VU meter for monitoring recording levels.

The unit operates on 100V AC power supply, standard in Japan at the time of production, and is housed in a rugged cabinet designed for portability and durability. Microphone input and other basic audio interface options are part of the deck’s features, compatible with simple home or field recording setups.

Overall, the Sony 261 is regarded as a robust, straightforward tape recorder offering reliable analog recording with solid mechanical design and sound quality typical of early transistorized reel-to-reel machines aimed at consumers and semi-professionals.

This technical summary reflects characteristics including tape speed options, head type and configuration, power supply, and transport mechanism details typical of the Sony 261 model.​