The Sony TC-K 77 R is an auto-reverse cassette tape deck produced from 1980 to 1982 in Japan. It is equipped with features suitable for both casual listeners and audio enthusiasts. The device is notable for its remote control capability, which is included with the unit. The original price of the TC-K 77 R was approximately 600 US dollars or 1,680 Deutsche Mark. The tape deck supports multiple tape types, specifically I, II, III, and IV. Its frequency response varies based on tape type, offering a range from 20 Hz to 19 kHz for both metal and Ferric Chromium tapes, while slightly lower ranges are provided for chrome and normal tapes. The distortion factor is maintained at a low level of 1.0% for metal and Ferric Chromium tapes. The signal-to-noise ratios demonstrate its capability to deliver clear sound, with figures reaching around 64 dB when utilizing Dolby B, depending on the tape type. A prominent feature of the TC-K 77 R is its VU meter with peak hold functionality, allowing users to visually monitor levels while recording or playback. This unit belongs to a series of cassette decks including models like the TC-K 22, TC-K 33, TC-K 44, TC-K 51, TC-K 61, TC-K 65, TC-K 71, TC-K 80 II, and TC-K 81, alongside others.
