TEAC A-350

Commentary

This is the first stereo cassette deck in Japan equipped with Dolby noise reduction.

The Dolby System is effective in reducing tape hissing and transistor noise, which are problems in cassette stereo systems.
This noise reduction method automatically raises the level of the medium and high range pianissimo during recording. During playback, only the raised level portion of the pianissimo is extracted and lowered to reduce the amount of tape hiss added during recording.
This Dolby system can be turned ON and OFF, and normal recording and playback are also possible.

A circuit configuration in which microphone input and line input are separated and independent is adopted.
The conventional cassette deck is designed to attenuate the input from the line through a resistor to the same level as the microphone (1/400) and send it to the microphone amplifier. However, the A-350 has improved the S / N ratio by more than 15 db by directly sending each input.

Equipped with a tape selector to support chrome tapes.

The head is equipped with an HD (high density) ferrite head.
This head is harder and more durable than the conventional one. Moreover, by taking into consideration the electromagnetic conversion characteristics, it creates a sharp magnetic field without distortion up to the high-frequency range, enabling more ideal recording and playback. Moreover, loss is less and bias current is less.

Equipped with a LED peak level indicator and an expanded scale VU meter.

Equipped with an electronic auto end stop, the operation button, head and pinch roller automatically return to the stop position when the tape is finished winding, and the mechanism completely returns to the stopped state. This eliminates unnecessary burden on the mechanism and tape.

The motor uses a small, high-efficiency hysteresis synchronous outer rotor motor developed for cassettes.
Since the outer rotor motor (rotor) rotates outside the stator, it has features such as less uneven rotation due to the flywheel effect, less leakage flux and less heat generation, and stronger starting torque.

It is equipped with a tape running indicator lamp. When the tape runs, the light stripes move in the running direction to indicate the running state of the tape.

The amplifier circuit takes into account the dynamic margin above the saturation point of the tape.

Equipped with a slide volume that can be adjusted independently on the left and right during recording and playback.

Equipped with a pause button.

It has a headphone port.

Equipped with 3-digit index counter.

Equipped with a DIN connector terminal.

There was an acrylic cover sold separately.

Model Rating

Type	Stereo cassette deck
Track format	4-track, 2-channel stereo system
Tape used	C-60, C-90 Type
Tape speed	4.8cm/s
Motor	Hysteresis synchronous outer rotor motor
Wow and flutter	0.13%
Early winding time	Up to 90 seconds (C-60 tape)
Frequency characteristic	30 Hz ~ 16 kHz (Chrome Tape) 30 Hz ~ 13 kHz (Hi-Fi Tape)
Signal-to-noise ratio	50dB 58dB(Dolby in)
Input Sensitivity / Impedance	Line : 0.1V/50k Ω Microphone : 0.25mV/-72dB/600 Ω ~ 10k Ω
Output Level / Impedance	Line : 0.3V/10k Ω or more Headphone : 8 Ω
Power supply voltage	100 VAC, 50Hz/60Hz
Power consumption	15W
External dimensions	Width 430x Height 110x Depth 250 mm
Weight	5.3kg
Sold Separately	Acrylic Cover TZ-135 (¥ 2,000)