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“For digital inputs, the P 6 features a pair of SPDIF optical inputs, coaxial SPDIF input, as well as a USB input. It should be noted that if you choose to use any of the SPDIF input options, you’ll be limited to PCM audio only, up to 192kHz/24-bit. Only the USB input allows you to take advantage of 384kHz/32-bit PCM and DSD up to quad rate.

With that said, for most of my listening, I fed the P 6 digital audio from my desktop computer to one of its optical inputs. This is my preferred connection when using a computer as a source due to Toslink’s inherent galvanic isolation. I do realize the relative limitations of using this input option, though, so to test DSD functionality, I did connect via USB for a short period of time.”