TEAC X-7R MKII

The TEAC X-7R MKII is a compact, high-fidelity reel-to-reel tape deck from the late 1970s to early 1980s, designed as an advanced version of the original X-7R with added features such as improved tape compatibility and auto-reverse functionality.

• Track System: 4-track, 2-channel stereo with auto-reverse capability, allowing continuous bi-directional recording and playback.

• Heads: Equipped with 6 heads in total — 2 playback, 2 record, and 2 erase heads — supporting seamless auto-reverse operation.

• Tape Speeds: Three selectable speeds — 3¾ ips (9.5 cm/s), 7½ ips (19 cm/s), and an additional speed (likely 1⅞ ips or similar, depending on model variant).

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

• Motors: Three motors — one DC FG servo capstan motor for precise tape speed control, and two DC slotless motors for reel drive.

• Wow and Flutter: Approximately 0.12% at 7½ ips, indicating moderate speed stability for the period.

• Frequency Response: 40 Hz to 20 kHz at 7½ ips (±3 dB), suitable for high-fidelity audio reproduction.

• Signal-to-Noise Ratio: Around 48 dB, typical for consumer-level decks of that era.

• Total Harmonic Distortion: Approximately 0.8% at 1 kHz, normal operating level.

• Crosstalk: About 40 dB, providing reasonable channel separation.

• Inputs and Outputs:
  Line input sensitivity: 60 mV
  Microphone input sensitivity: 0.25 mV
  Line output: 0.45 V
  RCA connectors for line in/out
  Front panel microphone inputs and headphone jack

• Additional Features:
  NAB equalization standard.
  Pitch control with ±6% variation.
  Dual large, base-lit VU meters for precise level monitoring.
  Timer record and playback functions.
  Record mute function.
  Mic/line mixing capability.
  Logic transport controls.
  Optional remote control available.
  EE tape compatibility added in MKII version (though of limited practical impact at standard speeds).

• Physical Dimensions and Weight:
  Approximately 461 x 369 x 270 mm (WxHxD)
  Weight around 18 kg (39.7 lbs)

• Build and Design: Japanese manufacture with solid-state electronics, designed for home and semi-professional use, combining compact size with versatile features.