I'll check over the weekend what the WIIM does with Airpulse A300pro, which uses the same Kleernet technology.
For a standard, I have the unit connected to a balanced DAC that feeds the balanced inputs of the speakers separately, which works remarkably well.
Today, I checked the Airpulse A300 pro in wireless mode (kleernet), optical input
a) test signal via WIIM
16/48. and 24/48 - if you start with one of these settings, everything works flawlessly until you switch the output rate to 24/96 or 192,
than crackling high pitched noise on the right (main) speaker, left speaker plays sans probleme, but very bad pops sound when quitting on the main.
No return to lower bitrate via App possible - restart of speaker necessary.
When you start with WIIM settings on 24/96 or 192 settings, no content above 24/48 is played at all. However: no noise/plop
b) via local library/streaming, if starting with 24/48 setting:
16/44-24/192 content - no noticable problem for all rates playing, however, changing setting creates the problem with the A300 pro until you reset the speaker.
On saturday, I played local 24/192 files on the Airpulse A80 actives without problems, having the 24/192 settings on the WIIM still active.
afaik: downsampled to 24/96 internally, amplified and output via speaker connection to slave