JVC XLV-550
Documentation on the JVC XLV-550 is thin. What survives is a single test report in HiFI-Stereo (April 1988, p.31), which identifies the unit as a compact disc player. The OCR of that period text renders the model name "XL-V550." No manual, advertising or further collector material has surfaced in the Archive, so nearly everything known rests on that one review.
The review describes a player with a motorized volume control operated by two buttons. There is also a FADE button that reduces volume by about one-third with each press, for temporary quieting or smooth fades. That is an unusual set of output-level controls for a CD player.
The lab measurements were mixed. The two channels' output levels matched, but the converter's level linearity was poor. HiFI-Stereo (April 1988, p.32) measured amplitude errors of +6 dB at -90 dB and +10 dB at -100 dB. Channel separation fell short of the magazine's expectations, and the passage saying by how much is cut off in the surviving OCR. If you own an XLV-550 or have a manual, the Archive would welcome the details.
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