Sony - TC-K81 Cassette recorder-player

Nice vintage device, over 45 years old. Many options and good operation. A few small signs of use, such as in the photos

Specifications
Type: 3-head, single compact cassette deck

Track System: 4-track, 2-channel stereo

Tape Speed: 4.8 cm/s

Heads: 1 x combination record/playback, 1 x erase

Tape Type: type I, FeCr, CrO2, Metal

Noise Reduction: B

Frequency Response: 20Hz to 20kHz (Metal tape)

Signal to Noise Ratio: 65dB (dolby B)

Wow and Flutter: 0.04%

Total Harmonic Distortion: 0.8%

Input: 77.5mV (line), 0.25mV (mic)

Output: 0.435V (line)

Dimensions: 430 x 130 x 290mm

Weight: 6.3kg

Year: 1980