Just got my NFB-11 with TCXO upgrade and I'm having some strange behavior.
I use Windows 10 and Mac OS X with optical via my onboard sound and USB via a USB 2.0 port.
In both OSes, when I use the device over USB it seems to shut off or go to sleep every time there is no sound. This causes a half second delay in hearing new sound, which basically means I can't use it as my external sound card because no notification sounds will ever be heard. Is there some way to get it not to go to sleep?
Also, I had significant popping when I tried to play a 16-bit / 44.1 file while in DAD 32-bit / 384 mode. Also YouTube videos basically had no sound when the OS was set in this mode in Windows 10. In Mac OS X it seems to work sometimes. I set the bit rate in the Audio MIDI Setup utility to the 32-bit 384 and it either works, or I get significant popping. I'm guessing the USB can't timing sync with the computer?
Anyway, I mostly use Mac OS X (Hackintosh setup) but on both OSes I'd love to be able to shut off the onboard audio completely and just use the NFB-11 as my USB sound device in both OSes for all system sound.
On the plus side, I don't mind the 24-bit/96khz optical, which works flawlessly and the sound is incredible to be sure.
Here's my part list: http://pcpartpicker.com/p/JcQkP6
Motherboard is an Asus Z97 Sabertooth Mark 1 with the latest BIOS.