Kenwood DP-990SG

All that survives is a single database listing. No original manual, no period advertising and no owner documentation has turned up in the archive. It appears to have been a solidly specified mid-range machine, with a 3-beam laser pickup feeding a digital processor and DAC that the source lists ambiguously as "Multi-bit / 1-bit" for all three stages.

Known specs are respectable for the era. Frequency response is rated at 2Hz–20kHz, signal-to-noise at 102dB, dynamic range at 96dB, and THD at 0.0028%. Output is 2V. It measures 440 × 108 × 295 mm and weighs 4.6 kg. The unit is a single transport — no changer mechanism — and the database confirms two channels. Notably, HiFi-Stereo (February 1989, p.100) was covering Kenwood's CD lineup in this period, and the DP-990SG would have sat among contemporaries featuring double- and quadruple-oversampling filters, though no review of this specific model has been located.

The gaps are big. There are no production years, no original price, no digital output specifications, no DAC chip identification, and no second source for any of the figures above. The single database entry is the entire paper trail. The DP-990SG does turn up now and then on the secondhand market, so it exists in private hands, but no price data or owner reports have been captured.

Type: Single-disc CD player
Laser pickup: 3-beam
Frequency response: 2Hz–20kHz
S/N ratio: 102dB
Dynamic range: 96dB
THD: 0.0028%
Output: 2V
Dimensions: 440 × 108 × 295 mm
Weight: 4.6 kg

If you own a DP-990SG and can fill in the blanks - the DAC chip, the digital outputs, the remote, the year it shipped - the archive would welcome the documentation.