Mike.

Sure.. i hope you find the following interesting given your deep experience.
Let me say this applies to windows only as i dont know obviously the deep nuances Or internals of mac os //core audio.

So…the basics of the issue why multiclient (for brevity MC)...?

Lots of win users want to run multiple music apps “concurrently” and “fluidly”.
For example biab AND a daw (reaper/1/realband/cubase etc) and other apps.
So they can move easily between each and have multiple apps open at the same time…
And the KEY being one music app running not locking out use of other music apps.

As i understand it, by using a MC driver , thus, the music producer can achieve above.
Ie multiple music apps running concurrently.

One aspect ive not been able to nail down from my research is IF each app has to run the same sampling rate and bit depth.

In win , and one reason i test any new sound interface before i buy it via renting…
I can test not only the performance but also if the driver is MC capable.

for further info on MC you might want to read following..

https://forum.rme-audio.de/viewtopic.php?id=32560

and i understand some sound devices use the following MC driver.

https://www.thesycon.de/eng/usb_audiodriver.shtml

from what ive seen a user wanting the MC feature should confirm with the manufacturer of the sound device whether it has MC drivers. cos as i said at thread begin, and as youve found out, info is scant.

of course , one final thing, if we address rtl (round trip latency). there will always be rtl irrespective of driver. and we must all remember win is not a real time os,
and software developers have to follow the filling
buffers model of course etc etc.

i think the lowest latency sound device ive found on the net is the slate digital..less than 1ms i understand.

the sands are always shifting mike..lol.

ps...you might find this interesting from a microsoft
employee pete that also owns a sophisticated recording studio. its an interesting multi part read.
obviously he knows his stuff. it covers many aspects.

https://devblogs.microsoft.com/windows-music-dev/unofficial-windows-10-audio-workstation-build-and-tweak-guide-part-1/

best
om

Last edited by justanoldmuso; 04/20/22 02:42 AM.
New Song "PRETTY GIRL" for my wife...Dec 2023
(my vocs....mixed for good earbuds.)
https://soundcloud.com/alfsongs/prettygirlrbfinalcalfsongsdec2023mp3
(and rock song THE STALLION and bluegrass song... BANKER MAN....90 songs useing bb/rb.)