Yamaha CDX-1110U (1988–1989)
The Yamaha CDX-1110U was the company's flagship Compact Disc player, introduced in 1988. Audio (September 1988, p.103) reported it as a new top-of-the-line model with true 18-bit D/A converters, a technology then appearing in only a few top players, and eight-times oversampling. The same review noted that the oversampling let the analog output filter be made unusually gentle - or even bypassed entirely - which reduced phase shift in the audible band (Audio, September 1988, p.104).
Specifications from period sources are consistent. HiFI-Stereo (January 1989, p.76) listed frequency response as 2 to 20,000 Hz ±0.3 dB, total harmonic distortion plus noise at 1 kHz as 0.002%, and dynamic range as 100 dB. Audio's later equipment profile (December 1989, p.104) gave a slightly higher THD + noise figure of less than 0.003%, and a frequency response of 2 Hz to 20 kHz ±0.3 dB. The same profile priced the player at $1,499 and listed its weight at 35 lb 3 oz (16 kg).
Little else is documented about the CDX-1110U beyond these reviews. No service manuals, production run figures, or widespread user impressions have surfaced in the vintage-audio record. It seems to have been marketed mainly through the 1988-1989 model years before being superseded.
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