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The Sony TC-121A is a stereo cassette deck, it was introduced by Sony in 1973 with a list price of USD $130 and discontinued 2 years later in 1975.

The TC-121A is equipped with, tape type selection with support for normal tapes, belt driven single-capstan transport.

Tape eject is operated mechanically and the cassette needs to be placed with the side to be played facing forward in the cassette well.

Mechanical transport controls for reliable Sony TC-121A transport function selection.

Compact Cassette

Historic events

1973 TDK introduced a replacement for chromium dioxide and named it Avilyn.
1974 DuPont introduces chromium dioxide (CrO2) cassette tape.
1975 The first calculator watch was launched by Pulsar.

Features of Sony TC-121A

Compact Cassette
General
Stereo
Head Configuration
Head Configuration
4 Track / 2 Channel
Controls
Operation
Mechanical Transport Control
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Normal Tape Capabilıty
Transport
Transport
Sìngle Capsŧan Transport Belt Drive (Capsŧan) Mechanical Tape Loading

Similar to Sony TC-121A from the period 1973 - 1975