Download dBpoweramp DSD Decoder Release 3 1.4MB 32 & 64 bit codecs included Description DSD (Direct Stream Digtal) is the audio format used for Super Audio CDs (SACD).Although impulse response graphs can be excellent with MHz sampling rate (this is often a 'talking point' in the DSD/Sony ad literature over the years), when resampling PCM to DSD, we're still hampered by the PCM signal's original sampling rate (eg. Noise is again very evident in this 'zoomed in' impulse response measured at 24/192 especially from the DSD64 process.