Sony SCD-1 Super Audio CD/CD player Measurements, CD player 2
Fig.4 Sony SCD-1, spectrum of dithered 1kHz tone at -90dBFS, with noise and spuriae, 16-bit CD data (right channel dashed).
Fig.5 Sony SCD-1, spectrum of -1 LSB with noise and spuriae, 16-bit CD data. (1/3-octave analysis, right channel dashed.)
The SCD-1's DAC linearity on CD replay (fig.6) is also superb—as the same DAC is used for SACD replay, I assume this fine performance will also apply in that case—while the player's low analog noise floor and excellent linearity mean that its representation of an undithered 1kHz tone at -90.31dBFS (fig.7) is also textbook. The three discrete voltage levels and the Gibbs Phenomenon "ringing" at the bit transitions in this waveform are clearly evident.
Fig.6 Sony SCD-1, CD left-channel departure from linearity (2dB/vertical div.).
Fig.7 Sony SCD-1, waveform of undithered 1kHz sinewave at -90.31dBFS, 16-bit CD data.