Akai ST1A

• Track System: 4-track, 2-channel stereo with stereo playback and recording.

• Tape Speeds: 19 cm/s (7½ ips) and 9.5 cm/s (3¾ ips), change facilitated by removable capstan.

• Maximum Reel Size: 7 inches.

• Heads: 2 heads — 1 erase head and 1 combined record/playback microgap head made by Akai.

• Motor: Single dynamically balanced 4-pole hysteresis synchronous motor.

• Wow and Flutter: Less than 0.17%.

• Frequency Response: 30 Hz to 18 kHz ±3 dB at 19 cm/s.

• Distortion: Less than 2% at 1 kHz, 0 VU.

• Inputs: Separate jacks for microphone and line for each channel.

• Outputs: Stereo headphone jack (unbalanced).

• Power Output: 2 x 3 W undistorted.

• Loudspeakers: Two elliptical permanent magnet dynamic speakers (18 cm x 13 cm) with switch on/off.

• Metering: Two VU meters with side needle.

• Features: Sound on sound (DUB) capability, auto shut-off, bass reinforce switch.

• Power Requirements: AC 100-245 V, 50/60 Hz.

• Build: Wooden suitcase-style table model carrying case.

• Dimensions (W x H x D): 530 mm x 330 mm x 250 mm (20.9" x 13" x 9.8").

• Weight: 19 kg (approx. 41.85 lbs).

• Manufacture Era: Early 1960s, one of Akai's first stereo tape recorders with integrated amplifiers.

The ST1 combined solid-state preamplification with traditional tube output stages and included integrated speakers, making it a self-contained stereo tape recorder suited for home use. It emphasized robust build and multi-function recording features popular at the time.