Quadrasonic Stereo Tape Deck RS-740US

The Panasonic RS-740US (also known as the Technics RS-740US) is a vintage 4-channel (quadraphonic) reel-to-reel tape deck produced in Japan during the early 1970s. It was designed for high-fidelity audio enthusiasts, offering the ability to record and play back discrete four-channel surround sound or standard stereo audio.

• 2 Hot Pressed Ferrite Record Playback Heads
• Third Ferrite Erase Head
• Record and play 4 channel or 2 channel Stereo
• 4 Mike inputs for live Quad Recording 

Key Specifications & Features:

• Track System: 4-track, 4-channel quadraphonic/2-channel stereo.
• Media: Uses standard 1/4" tape on reels up to 7 inches.
• Tape Speeds: Capable of recording and playback at 7½ ips and 3¾ ips (inches per second).
• Audio Channels: Features four separate channels, often labeled as "Front" (Left/Right) and "Rear" (Left/Right) for early surround sound setups.
• Interface: Includes four VU meters to monitor signal levels for each channel simultaneously.
• Design: Typically housed in a wood-grain cabinet with a clean, classic silver faceplate. 

With empty reel, 4 connection cords, 2 reel holders, splicing tape and head cleaning ribbon. 

Here you find 3309 models, 3102 with images and 723 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Panasonic, Matsushita, National ナショナル (also tubes); Osaka