Upsampling / Oversampling Output Rate
The PCM sample rate sent through a digital output, including its highest selectable rate when several are available.
Output sample rate describes the transmitted PCM stream. It is separate from accepted input rates, internal DAC processing and DSD output, and may differ between digital connections.
Upsampling / Oversampling Output Rate — CD Transport
For a CD Transport, the output may carry the CD’s original 44.1 kHz rate or a converted PCM rate. Upsampling changes the transmitted rate without creating information that was absent from the recording.
Read the rate with the named output and any required mode. A dual-wire connection or selectable upsampling setting can differ from ordinary single-cable operation. An internal oversampling claim does not establish the rate at the digital socket.
Compare the chosen output and mode with the DAC’s accepted rates and connections. A higher rate is not automatically better, and a transport sending unchanged CD data can legitimately specify 44.1 kHz.
Upsampling / Oversampling Output Rate — SACD Transport
For an SACD Transport, PCM output rate describes the PCM signal available at a particular digital connection. It must be distinguished from native DSD output and from processing used only inside a built-in converter.
Read the rate with the output, disc source and operating mode where stated. Different links can have different limits. A high rate accepted by another input or supported for files does not establish what the disc transport sends out.
Compare the transmitted format and rate with the receiving DAC or processor. A PCM rate alone does not establish native SACD DSD delivery, and upsampling does not restore detail that was never present in the source.