Aiwa HP-X1000 (c. 1992–1994)
The Aiwa HP-X1000 appears in the headphone roundups of HI-Fi-Stereo-Buyers (1992, p.228; 1993, p.200; 1994, p.183), and those directory listings amount to nearly the whole documentary record. They describe a full-size headphone with a coiled, one-sided cord and gold-plated mini phone plug; the 1994 entry characterizes the cord as LC-OFC Litz. The drivers used what Aiwa called amorphous-diamond laminated dome diaphragms, in a glass-fiber-reinforced plastic structure.
Little else is documented. The driver size is quoted inconsistently across the OCR'd pages — readings range from 2 in to 2¾ in — so I'm not pinning it down. The listings do include a frequency response of 20-24,000 Hz, an impedance of 50 ohms, and an original price of $59 (HiFI-Stereo 1992, p.228). What is clear is that the HP-X1000 was pitched above the miniature and in-ear models surrounding it in the same buying guides, and the diamond-dome driver was its technical talking point.
- Full-size headphones, listed 1992–1994
- Coiled one-sided cord, gold-plated mini phone plug; later listing notes LC-OFC Litz cord
- Amorphous-diamond laminated dome diaphragm drivers
- Glass-fiber-reinforced plastic construction
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