Akai X-165D

• Track System: 4-track, 2-channel stereo/monaural quarter-track system with Akai's cross-field bias head technology

• Tape Speeds: Supports three speeds—1⅞, 3¾, and 7½ inches per second (IPS)

• Maximum Reel Size: Up to 7 inches (18 cm)

• Heads: 3 heads — erase, record/playback, and cross-field bias head made of permalloy for improved fidelity

• Motors: Single hysteresis synchronous 2-speed motor

• Frequency Response: Approximately 30 Hz to 20 kHz (±3 dB) at 7½ IPS, 30 Hz to 18 kHz at 3¾ IPS

• Wow and Flutter: 0.12% RMS at 7½ IPS

• Signal-to-Noise Ratio: Around 50 dB

• Total Harmonic Distortion: About 3%

• Inputs: Microphone (0.5 mV), Line (50 mV) with level controls

• Outputs: RCA line output, DIN, and headphone outputs

• Dimensions: 340 x 304 x 230 mm (13½ x 12 x 9 inches)

• Weight: Approximately 14 kg (30.8 lbs)

• Features:
  Auto stop/shut-off switch for tape end
  Three-mode equalizer switch
  Three-digit tape counter
  Twin illuminated VU meters with separate left and right line-in level control allowing input mixing
  Solid-state electronics for reliability and sound fidelity
  Not equipped with built-in speakers or amplifier

• Manufacture Period: Early to mid-1970s (circa 1971 to 1975), Made in Japan

The X-165D is known as a solid mid-high fidelity compact deck noted for its reliability, cross-field recording system ensuring high-frequency clarity, and ease of use for the home audiophile user.