TEAC A-2340SX

The TEAC A-2340SX is a 4-track, 4-channel reel-to-reel tape deck produced in Japan between 1976 and 1981, designed for consumer and semi-professional use with quadraphonic and multi-channel recording capabilities.

• Track and Channel System:
  4-track, 4-channel system supporting stereo, monaural, and multi-channel (quadraphonic) recording and playback.

• Heads:
  Three heads: one erase, one record, and one playback head (Simul-Sync type), allowing simultaneous monitoring of recording.

• Tape Speeds:
  Two selectable speeds: 3¾ ips (9.5 cm/s) and 7½ ips (19 cm/s).

• Motors:
  Three motors total: two reel motors and one capstan motor, providing stable tape transport.

• Reel Size:
  Supports reels up to 7 inches in diameter.

• Frequency Response:
  Approximately 40 Hz to 18 kHz at 7½ ips
  Around 40 Hz to 10 kHz at 3¾ ips.

• Wow and Flutter:
  0.08% at 7½ ips
  Less than 0.10% at 3¾ ips, indicating stable tape speed and minimal pitch variation.

• Signal-to-Noise Ratio:
  About 55 dB (weighted, 3% THD level).

• Total Harmonic Distortion:
  Approximately 1.5%.

• Crosstalk:
  Around 35 dB.

• Inputs and Outputs:
  Line input sensitivity: 97 mV
  Microphone input sensitivity: 0.25 mV
  Line output: 0.3 V
  Headphone output: 8 Ω
  Standard RCA connectors.

• Additional Features:
  Built-in Simul-Sync for sync recording on separate channels.
  Added CUE lever function to precisely locate tape positions for editing, re-recording, or dubbing.
  No auto-reverse feature.
  Solid-state electronics with 24 transistors and 8 diodes.
  Bias frequency: 100 kHz.
  Rewind time: approximately 90 seconds for 1,800 ft tape.

• Physical Dimensions and Weight:
  Dimensions: approximately 18¾ x 17½ x 8¾ inches (475 x 440 x 220 mm)
  Weight: about 21 kg (48.5 lbs).

• Market and Pricing:
  Originally priced around $800 in the USA (circa late 1970s).