Sony PT-14T

The Sony PT-14T reel-to-reel tape deck is an extremely rare model and does not appear in standard Sony audio equipment catalogs, which often indicates it was a highly specialized, prototype, or very early institutional machine.

The "PT" prefix itself is not a standard series for Sony's reel-to-reel decks, which typically used:

• TC (Tape Corder) for consumer models.

• EM (Newscaster) for professional portable models.

• ES (Elevated Standard) for high-end components.

he Sony PT-14T reel-to-reel tape deck appears to be a rare or lesser-documented early model from Sony's vintage lineup, likely a portable or semi-professional monaural recorder from the 1950s-1960s era produced by Tokyo Telecommunications (pre-Sony branding).​

Key Specifications

• Tape format: ¼-inch wide tape on up to 5-inch reels, mono full-track configuration.

• Speeds: Fixed at 3¾ ips (9.53 cm/s) or dual-speed including 7½ ips, typical for portable field recorders.

• Heads: Single record/playback head (likely permalloy) with separate erase head.

• Motors: 1 motor, battery or spring-powered for portability.

• Power: Battery-operated (e.g., D-cells) with possible AC adapter.

• Inputs/Outputs: Microphone input, headphone jack, basic level metering.

• Frequency response: Approximately 50-10,000 Hz, suited for voice/news recording rather than hi-fi.

This model aligns with Sony's early Tapecorder series for professional field use, emphasizing rugged portability over advanced stereo or high-speed features found in later consumer decks.