Sony TC-K65

A metal tape-compatible stereo cassette deck with microcomputer-controlled operation and Dolby NR, designed for high-fidelity recording and playback.

Overview

The Sony TC-K65 is a stereo cassette deck produced by Sony, featuring advanced automation and high-performance specifications for its era. It shares a similar configuration with the TC-K55 but adds an RMS (Random Memory Music Sensor) and replaces the VU meter with an LED peak program meter. The unit is microcomputer-controlled, using a 4-bit 42-pin LSI for operation, and supports direct change operation for fast tape handling.

Specifications

Track format	4-track 2-channel
Heads	Recording : S & F Erasing : F & F
Motor	BSL Green Motor High torque motor
Servo system	Hall element detection frequency servo
Wow & flutter	0.04%WRMS
Frequency characteristic (Metal Tape)	20 Hz to 19 kHz 30 Hz to 13 kHz ± 3 db (at 0 VU recording)
Signal-to-noise ratio	59 dB (Dolby off, Peak Level, DUAD cassette)
Distortion factor	1.0% (DUAD Cassette)
Input terminal	Mic : 0.25 mv (-70dB) / Suitable for low-impedance microphones Line : 77.5 mV (-20dB) / 50k Ω
Output terminal	Line : 0.435V/50k Ω Headphone : -28dB/8 ohm load
Power	100 VAC, 50Hz/60Hz
Power consumption	17W
External dimensions	Width 430x Height 130x Depth 290 mm
Weight	5.7kg

Design

The TC-K65 uses a 2-motor mechanism with a BSL (brush and slot-less) motor and non-contact magnet clutch for precise tape transport. The recording head combines Sendust and ferrite (S & F), offering strong high-frequency response and high saturation flux density, while the erase head uses a magnetic focus 4-Gap design. The amplifier section employs a ±2 power supply system, and input circuits for mic and line are separated with dedicated volume controls. It includes a built-in recording master volume, Rec Mute with auto space, autoplay/memory play, and follow-up recording. A 4-step tape selector with independent bias and equalizer settings supports various tape types, and the unit features an auto shut-off mechanism and a built-in see-through lamp. The remote control unit was sold separately.

Product Family

The TC-K65 shares nearly the same configuration as the TC-K55 but adds an RMS (Random Memory Music Sensor) and an LED peak program meter in place of the VU meter and peak indicator.