I'm having the same problem.i'm having issue with the plugin.
first for other who don't understand (like me)
-dowload the plugin, get in the folder and choose either the x86 or the x64 depending of your system (64 or 32 bit)
-then put the plugin in the folder PLUGIN of OBS, not the whole folder, it wont be detected.
-if the plugin is detected you will find it in OBS once you press the PLUGIN button under MICROPHONE DSP PLUGIN
ok now the problem.
since i put the plugin in the folder i can't have any sound with my mic.
i usualy use my webcam mic, a logitech c930e, or my headset mic a tiamat 7.1
but since i put the plugin, when i am in the obs windows the sound preview is actually the mic preview, when i talk i see level going up, but the mic is at zero.
and when i reccord, i get no sound at all, i though it was just a preview but no,
can you help me ?