USB Dac disappeared when switched into async mode

I was attempting to set up a foobar based CAS using my Win 7 (64) computer (FYI, a Brazos based MSI Windpad 110W) over USB into my Esoteric K-03 as DAC. I have run Esoteric's firmware on the computer and have also put in the Asio and Wasapi dlls into the components directory

With the Esoteric under normal USB mode ( it is switchable), I can see it under "output" in Foobar and there is sound (despite everything being output as 44.1 only). Switching over to HS1 or HS2 mode (Esoteric's async modes), I first here a "Dung-ding" on the computer (the sound you hear whenever you plug some usb device in) and in a few seconds "Ding-dung" (as if the USB device is unplugged). The Esoteric is no longer seen under the output selection (not even the normal USB).

I have tried various sequence of installation (i.e. software first vs. hardware first) and with and without Wasapi and Asio dlls.

There was once where I plug in the hardware first, let it search and fail to find driver, and installed Esoteric's software. It then showed that it was installed sucessfully. Then, it disappeared from the device manager menu and Foobar output menu.

I have tried a couple of USB cables so it is not a cable issue. I have also set-up with another XP computer before, so it is probably not the Esoteric's hardware issue either.

I tried another admittedly old and under-spec'd (Core Solo U CPU) laptop. That one installed properly, has sound, but itself is too slow to handle the streaming (CPU at 100% at all times and music chokes)

This is maddening.

I would appreciate your help if you can point me to some possible fix.

Thanks a lot.

amirm said:

Is a driver required? Often drivers are only needed for > 96 Khz sampling since Windows class driver doesn't support that. If so, it would be good to see if it works with inbox (built-in) windows drivers.

The other thing to try is use a different USB port on your computer.

Click to expand...

I have tried installing Esoteric's proprietary driver before and after insertion of the USB device, and there is just one USB port on this little Windows tablet.

Thanks.