| Title | Value |
|---|---|
| Heads : | 2x S&F |
| 1x Ferrite | |
| Motors : | 1x BSL for capstan |
| 1x High Torque for spooling | |
| NR system : | Dolby B |
| Wow & flutter : | ± 0,12% (DIN 45507) |
| 0,04% (WRMS) | |
| Response (re: -20dB) : | 20Hz...20Khz (Type IV, ±3dB) |
| 20Hz...13Khz (Type IV, ±3dB, re: 0dB) | |
| 20Hz...20Khz (Type III, ±3dB) | |
| 20Hz...18Khz (Type II, ±3dB) | |
| 20Hz...18Khz (Type I, ±3dB) | |
| S/N ratio (DOLBY OFF) : | 60dB (Type IV / III, 3% THD) |
| 58dB (Type II, 3% THD) | |
| THD : | 0,8% (Type IV / III, re: 0dB, 1Khz) |
| Crosstalk : | 60dB (1Khz, track) |
| Separation : | 35dB (1Khz, channel) |
| BIAS : | 105Khz |
| Inputs : | x LINE (-20dB / 77,5mV) |
| Outputs : | 2x VARI (-5...-29dB / 435...27,5mV) |
| Headphones : | -20...-44dB / 77,5...4,9mV (8 Ohm) |
| PC : | 41W |
| Dimensions : | 43 x 10,5 x 39cm |
| Weight : | 9,5kg |
| Remote commander : | RM50 or RM65 or RM80 (all wired) |
| FEATURES | FEATURES |
| • | Anti resonant transport design |
| • | Heavy gauge Aluminium plates |
| • | Outboard Power supply |
| • | Encapsulated Ribbon-Core PT |
| • | FET-buffered PSU |
| • | Dual-Mono structure |
| • | DD system + Linear Torque BSL |
| • | Quartz Lock |
| • | Closed-Loop Dual Capstan |
| • | S&F Heads |
| • | Adjustable Bias |
| • | REC calibration |
| • | Exclusive Sony Dolby IC |
| • | Digital Linear Counter |
| • | 30 segment FL display |
| • | Feather-touch controls |
| • | Memory Counter |
| • | Auto Play / Auto Space (Rec Mute) |
| • | Timer switch |
| • | RM-50 wired Remote |
| • | RM-80 semi-wired Remote |
| • | Turntable SYNC with RM-65 remote |
Sony TC-K777
october 1980
1983
Solid, excellent sounding and arguably one of Sony's best and one of the best cassette recorders full stop.
Stereo Sound ranked it in 1983 as Best Buy above the three monster Naks (DRAGON , ZX-9 , 1000ZXL) - not bad for a brand "only making nice Walkmans" !
The K777 was so good from the start that differences between it and its two subsequent versions remained minimal (if audible).
All three bear the following :
Encapsulated ribbon-core and FET-buffered outboard trafo, heavy gauge steel frame and aluminium plates, dual-mono boards, anti-resonant layout, all-DC FET SEPP i/os, BSL DD motor with Quartz-locked Closed Loop / Dual Capstan, two discrete S&F heads, three individual calibration trim pots (bias & rec level L/R) and 5-step calibrated line out selector.
Plus a large multi-function display which displays different markers according to action (rec/play, bias calibration or rec calibration), a switchable MPX filter (back-plate... nobody's perfect) and a wired or semi-IR remote plug for the RM-50, RM-65 or RM-80.
There is no Dolby C, though : that would be for the TC-K777ES update.
Sony made its reputation in the broadcast world with tape recorders and the K777 was a fine example of this fact.
One large partial view of the underside here.
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