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Sound Rating: 5 / 10 # Owners: 1
Relaibility Rating: 9 / 10 Views: 403

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Technical Details

Brand: Sony





Country of Manufacture:Japan

Release dates:1967-1967

Tracks:1/2 Rec/PB

Speeds: 3 3/4, 7 1/2

Max Reel Size("): 3"

Number of heads: 3

Head Composition: Permalloy

Head Configuration: Mono - Full Track

# Motors: 3

Auto Reverse?:No

Voltage(s): 110-120v

Frequency Response:(all 3 dB): 7½ ips: 30Hz - 17kHz; 3¾ ips: 30Hz - 10kHz

Wow and Flutter:less than 0.15% at 7½ ips RMS

Signal-to-Noise Ratio:more than 50dB

Sound quality rating:5 / 10

Long-term reliability rating: 9 / 10

Additional Details


The TC-777 was (according to SONY) Japan’s first all-transistorised tape recorder. It was a semi-professional, half-track mono recorder with three heads, three motors and two operating speeds.

The controls had a very solid feel about them and for 1961 this was a sophisticated piece of equipment. The tape transport mechanism was mounted on a die-cast aluminium block to maintain precision tolerances.

Replay characteristics were to NARTB specifications and the transport controls were via solenoid-operated push-buttons with an optional remote control facility.

The recorder underwent minor modifications in 1962,  becoming the TC-777A. However, these machines were very expensive (almost 30% more than a stereo Revox G36) and as a result didn’t sell very well outside of Japan. The 1963 stereo version, TC-777S fared a little better.

Additional Info

Timing accuracy: within 1% / Tone controls: bass 10dB at 50Hz. treble 10dB at 10kHz / Bias frequency: 92kHz 10% / Fast forward & rewind: within 105 seconds for 1800ft / Inputs: mic – low impedance, unbalanced 600 ohms line – high impedance, unbalanced / Outputs: line, speaker, monitor / Speaker(s): 6¼ PM dynamic / Dimensions: 18¾ x 16¼ x 10¼ (465 x 410 x 265 mm) / Weight: 42 lbs (19.1 kg) / half-track mono


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