I was one of the beta testers for this product. The only issue I have found with Audirvana so far is that Studio does not appear to auto-detect that the Airlens is an MQA decoder. Works fine if you toggle that setting manually though.
UPNP: Yes
Detection:
PCM supported sample rate : 44.1 - 48 - 88,2 - 96 - 175,4 - 192 - 354 -384
DSD supported sample rate : 64 - 128 - 256
DSD Over PCM setting : None - Accepts direct DSD
MQA capability : Decoder (Audirvana does not appear to autodetect with this device)
Volume:
Volume can be changed : Yes
Device can mute - unmute: Have not checked this
Playback:
Best upsampling setting for device :
Setting do not send RAW PCM activated : No
Playback Control:
Gapless playbak option enabled : Yes
USB:
Detection:
(Windows only) best option to play to the device : WASAPI
DSD Over PCM setting : None - Accepts direct DSD
MQA capability : decoder
Playback:
Best upsampling setting for device :