I²S is the output⦠DoP is not passed through to the DAC via I²S as this is a direct bit for bit connection to the DAC circuitry and output⦠it is processed on the AirLens and then the raw native 1-bit PDM signal is delivered to the MKII via I²S⦠I do know the MKII up-samples all PCM and DSD and delivers a 1-bit PDM signal to the output circuitryā¦
The AirLens is not a proprietary compliment to the PS Audio DACs, it can be applied to other DACs as wellā¦
You see in the screen-shot that the MKII supports 705.6kHz which is the PCM DoP carrier sample-rate for DSD256 (11.2MHz)⦠The AirLens does not support 705.6kHz signals.
That is obvious, but what signal is being sent to the MKII? It certainly is not a DoP signal from the I²S output of the AirLens⦠and if the AirLens is fumbling the DSD256 DoP signal this could be causing your playback anomaly in Audirvanaā¦
What happens when you set-up Audirvana for DSD128 via DoP 1.1?
So the debug report tells you something⦠Does this reflect the specifications of AirLens?.. it does not ā¦There is something wrong here⦠Is the firmware updated? You see that āDSD Capabilityā is raw DSD (msb) in the āActive method: UPnPā configuration.
The reason you are not seeing āNative DSD streaming methodā is because Audirvana is not seeing the AirLens as supporting DoPā¦
You have set the Maximum PCM Rate to 192kHzā¦The DoP PCM carrier sample-rate for DSD64 (2.8MHz) is 176.4kHz, the DoP PCM carrier sample-rate for DSD128 (5.6MHz) is 352.8kHz⦠Audirvana is converting all DSD to PCM for playback because it does not see the AirLens as DoP capable⦠Make sure the AirLens is set as the output device in Audio MIDI Setup and set to the maximum sample-rate and bit-depth of 32 bit/352.8kHz.
Why Audirvana is not seeing AirLens as DoP capable and limited to PCM 192kHz is something to ask PS Audio and maybe the Audirvana team can add further insight.