Thanks a lot for this, can you point me at any info on how best to use WASAPI?

Thanks I will take a look.

Sorry, my DAC is an Audiolab 8200 CDQ and works to 96 kHz and 24 bits. It did not come with any drivers but use of ASIO4all was recommended. Since the instructions only went to Win 7 I'm wondering which I should use out of ASIO, WASAPI or none of them. The computer is only used for Foobar so...

I have changed Foobar to 24 bits and it now works with the Exclusive mode. This DAC works up to (at least) 24 bit 96 kHz. Thanks for your help. Can you point me to an explanation of what the Exclusive mode is/does?

Screenshot attached.

OK, am looking to see how to attach screenshot. External DAC Audiolab 8200CDQ. I believe that Audiolab don't have specific drivers and I did have ASIO drivers installed but am not sure at the moment after an update, what's the easiest way to tell? I'm new here and don't know how to attach...

Sorry, no this has never worked, I only tried it recently.

I use the non-exclusive version but noticed that there is an Exclusive version so I tried it to see what happened (nothing other than the error message). The only thing I changed was the Output device in Library, Configurations, Output, nothing else was changed at all. I only use Foobar and...

When I switch Foobar output to my DAC's Exclusive mode I get an error saying: "Unrecoverable error unsupported stream format: 44100 Hz 16 bit 2 channels (0x3)" why is this happening?