This is not a software problem, it could be a problem
with the USB tap.
ONYX and AMETHYST USBClient uses the same USB tap, the only
difference is the software. Use the same suggestions as in the
document below.
ALSO SEE: AMETHYST USBClient does not want to record
ONYX was developed to play recordings made with ONYX.
If you make a recording using other application and play it
back it with ONYX, we are not responsible for the quality
of play-back.
ONYX recording is soft