If you want/need SPDIF, that will narrow it down quite a bit.
If you don't, I don't think there is a better buy under $500 than the new(ish) Behringer U-Phoria line: the UMC202HD, UMC204HD, and UMC404HD. Do a search over at gearslutz and I don't think there is a bad review. Everyone says the Midas preamps are stellar, it's quiet, and it will do 192.
Personally, I use the Native Instruments Audio Komplete 6 (it does have SPDIF), and it's been rock solid.
...or you can buy one of the usual brands already recommended.
@benvigil You mentioned using the Komplete Audio 6 -- I have it as well. Have you been successful in connecting your AX8 to it via s/pdif? Reason I ask is cause I've had problems with it that neither Fractal nor Native Instruments have been able to solve.
I have it and it works. It just doesn't allow direct monitoring of the digital input and it requires me to de- and reselect external sync when the PC is started with the AX8 connected via SPDIF
No, I'm on a Mac. I ended up selling the KA6 and picking up a UMC404HD, but I never used anything but the native macOS drivers for the KA6.@benvigil And you said you are on a PC, right? I am on a Mac myself, and for some reason the Komplete Audio 6 incorrectly identifies the AX8 as a 44.1k device, rather than 48k. Tried everything, and have spoken to both Fractal and Native Instruments about it, but have not found a solution.
No, I'm on a Mac. I ended up selling the KA6 and picking up a UMC404HD, but I never used anything but the native macOS drivers for the KA6.
Did you see this thread?
That seems to be a bug in the device driver or control panel. It shows 44.1k on my system too and forced me to set the sample rate in Reaper to 48k
Update: as soon as I play an MP3 file through the interface it updates the control panel to show 48k
@ChristThePhone And you are on a PC, not a Mac, correct?
No, I'm on a Mac. I ended up selling the KA6 and picking up a UMC404HD, but I never used anything but the native macOS drivers for the KA6.
Did you see this thread?