The Harman Kardon HK 400 XM Cassette Deck was introduced in 1980 and manufactured in Japan as a 3-head, single compact cassette deck. Designed as part of Harman Kardon’s early 1980s hi-fi range, the Harman Kardon HK 400 XM Cassette Deck combined a full 4-track, 2-channel stereo cassette format with a 2-motor transport, Dolby B noise reduction, HX headroom extension and support for standard, FeCr, chrome and metal cassette formulations.
The Harman Kardon HK 400 XM Cassette Deck uses a 3-head layout, with a combination record and playback head alongside a separate erase head. This configuration was intended to support more accurate recording and playback operation than simpler 2-head cassette deck designs, while still retaining a single compact cassette transport layout. The deck runs at the standard cassette tape speed of 4.75cm/s and uses a 2-motor system with one capstan motor and one reel motor.
Tape compatibility on the Harman Kardon HK 400 XM Cassette Deck covers type I, FeCr, CrO2 and metal cassette tapes, giving the machine support for the main cassette formulations available during the period. Noise reduction is provided by Dolby B, while the deck also includes HX headroom extension. This gave the Harman Kardon HK 400 XM Cassette Deck a recording feature set aimed at improving usable recording performance and high-frequency headroom when working with cassette tape.
The Harman Kardon HK 400 XM Cassette Deck was finished in silver and built as a full-width hi-fi component. Its design placed it alongside other Harman Kardon components from the same period, including the HK 750 integrated amplifier, HK 725 preamplifier, HK 770 and HK 775 power amplifiers, HK 710 and HK 715 tuners, HK 740 receiver, HK 705 tape deck and HK 720 turntable. The Harman Kardon HK 400 XM Cassette Deck was part of a broader component system line rather than a standalone portable or entry-level cassette recorder.
With its 3-head construction, 2-motor transport, Dolby B noise reduction, HX headroom extension and support for metal tape, the Harman Kardon HK 400 XM Cassette Deck represents a serious early 1980s cassette recorder from Harman Kardon. It was built during the period when cassette deck design was advancing rapidly, with manufacturers adding improved heads, higher grade tape compatibility and recording optimisation systems to push the compact cassette format further as a high-quality home recording medium.
Features
- 3-head single compact cassette deck
- 4-track, 2-channel stereo cassette format
- Combination record and playback head
- Separate erase head
- 2-motor transport with separate capstan and reel motors
- Dolby B noise reduction
- HX headroom extension
- Type I tape support
- FeCr, CrO2 and metal tape support
- Silver full-width hi-fi component design