Akai GX 221D

The Akai GX-221D is a 4-track, 2-channel stereo/monaural reel-to-reel tape deck produced in the mid-1970s, designed for serious home or semi-professional users looking for solid analog performance and convenient features.

Technical Overview

• Track System: 4-track, 2-channel stereo/monaural

• Heads: 3 heads (1 permalloy record, 1 permalloy playback, 1 erase)

• Maximum Reel Size: 7-inch reels

• Tape Speeds: 7½, 3¾, and 1⅞ ips

• Motors: 2 × reel, 1 × capstan

• Frequency Response:
  7½ ips: 30 Hz to 25 kHz (with low-noise tape)

• Wow and Flutter: 0.08% (7½ ips)

• Signal-to-Noise Ratio: 50 dB

• Total Harmonic Distortion: 1.5%

• Playback & Recording: Automatic and manual reverse playback, sound-on-sound recording feature, source/tape monitor switch, tape selector for bias/equalization adjustment

• Inputs:
  Line: 50 mV (150 kΩ)
  Microphone: 0.2 mV (10 kΩ)
  DIN connector: 0.4 V/50 mV (high), 2 mV (low)

• Outputs:
  Line: 1.23 V (required load over 20 kΩ)
  Headphones: 30–40 mV/8 Ω

• Dimensions: Approx. 440 × 425 × 220 mm

• Weight: Approx. 20.2 kg

• Voltage: 110–120V models and 240V available

• Other Features: Digital tape counter, auto stop and shutdown, pause control, monitor switch, robust full-metal drive system, runs on either 100 or 240V mains.

Summary

The Akai GX-221D stands out for stable tape handling with reliable 3-motor drive, versatile 3-speed operation, auto-reverse playback and solid sound quality, reaching up to 25 kHz bandwidth at 7½ ips. Its permalloy heads and comprehensive inputs/outputs offer both good durability and flexible recording/playback options. Compared to similar consumer or semiprofessional decks of the era, it holds up well in fidelity, longevity, and features, making it a sought-after classic by enthusiasts and vintage audio collectors.