Hi there - welcome !
3) Will play at 192 in Unattended Mode with 96/192 setting but if I hit Alt-S I get error message.
Although still in there, this mode of playback is actually for test purposes only and originates from very early XXHighEnd days when SQ was not (say 10 years back) what it is today.
It would be true that some more ancient DACs can work in this mode only (HD MoBo device can be among that, especially for laptops), but if that is the case then it would be the advice to get another DAC. Anyway, this is not your situation (I'd say, from the distance).
ASIO driver works fine in 32 bit but I think I like KS better.
There must be a misunderstanding here, somewhere;
ASIO is not supported by XXHighEnd (poor sound) so that can't play anyway. Thus let's say that you mean WASAPI (WDM);
If now you can play with that over 32 bits while you can not with Kernel Streaming, something should be amiss but I can't tell what. All I know is that KS is a lower level driver than WASAPI/WDM so it should be capable of more.
And yes, I realize that the maybe too many XXHighEnd settings may confuse. Maybe a key question should be this one :
2) To get irDAC to use KS mode I have to force 24 bits.
So what is wrong with that for you ?
IOW, is there a problem in the end ?
Notice that "DAC Needs" 24 bits is different from the 96/192 you mention, and that it won't be without reason that you tried the latter in the first place. It would be my idea of things that you try to stay out of that 96/192 Only mode, and *then* tell us what works and what not or what you like to achieve. OK ?
4) Minimize OS produces error message.
This is because you are in Demo Mode.
Please notice that being Activated will not imply your DAC suddenly to be able to play where it otherwise does not, but that SQ improves vastly in Minimized OS mode, while at the same time you have many more "tuning possibilities". This is because the OS runs so lean in that Mode, that all sorts of buffers can be set way smaller (or longer) and *that* influences SQ vastly on its own (you just have more play ground).
Let me know your findings.
Regards,
Peter