Accuphase DP-75V CD player Measurements part 2

The linearity error with 16-bit data (fig.4) was negligible down to below -100dBFS, which is among the best we have measured. As a result of this superb linearity and the very low noise floor, the DP-75V's reproduction of an undithered 1kHz tone at -90.31dBFS (fig.5) was essentially perfect---the three discrete voltage steps can be clearly perceived. Increasing the word length to 24 bits gave a reasonable facsimile of a sinewave (fig.6).

Fig.4 Accuphase DP-75V, departure from linearity, 16-bit data (2dB/vertical div., right channel dashed).

Fig.5 Accuphase DP-75V, waveform of undithered 1kHz sinewave at -90.31dBFS, 16-bit data.

Fig.6 Accuphase DP-75V, waveform of undithered 1kHz sinewave at -90.31dBFS, 24-bit data.

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Accuphase
Axiss Marketing
17800 S. Main St., Suite 109
Gardena, CA 90248
(310) 329-0187
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