Akai X-300

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

• Tape Speeds: 3¾, 7½, and optional 15 inches per second (IPS)

• Maximum Reel Size: Supports up to 10.5-inch reels as standard

• Heads: 4 heads — record, playback, erase, and separate cross-field bias head made of permalloy

• Motors: Three independent motors — hysteresis synchronous 2-speed capstan motor and two 4-pole induction motors for fast forward and rewind

• Frequency Response: 30 Hz to 24 kHz (±3 dB) at 7½ IPS; 30 Hz to 18 kHz (±3 dB) at 3¾ IPS

• Wow and Flutter: 0.05% RMS at 7½ IPS; 0.085% RMS at 3¾ IPS

• Signal-to-Noise Ratio: Better than 47 dB

• Total Harmonic Distortion: Within 4% at 1 kHz, 10 watts, 0 VU

• Crosstalk: Less than -82 dB (monaural), less than -45 dB (stereo)

• Inputs: Microphone (0.5 mV or more), Line (50 mV or more)

• Output Power: 20 watts per channel (undistorted)

• Speakers: Two 6x4" oval wide-range speakers (built-in)

• Dimensions: 340 mm (H) x 410 mm (W) x 230 mm (D)

• Weight: 21.3 kg (46.9 lbs)

• Features:
  Cross-field audio head system for high-frequency fidelity
  Automatic band cut-off
  Separate high and low frequency controls
  Multiplex recording
  Echo effects
  Vertical and horizontal operation
  Automatic stop and tape counter
  Metal piano key transport buttons

• Power: 6-step voltage selector (100 V to 240 V AC), switchable for 50Hz/60Hz

• Manufacture Years: 1965-1969 in Japan

The X-300 was Akai's first model to accommodate 10½-inch reels as standard and featured advanced cross-field bias head technology to improve recording quality across the audio spectrum. It was a professional-level consumer deck with solid-state electronics and modular amplifier cards, praised for sound fidelity and build quality.