Same process can be done in RB-
Hilight section
Richt-click -> audio effects->gain change.(or edit-audio effects-gain change)
Check the button selections and try boosting the gain a few dB..

The symptoms sound like maybe windows soundmapper is involved, diverting the signal
As mentioned, make sure correct input drivers are selected (hilighted)in Pref->Audio and then click the 'move selected device to top' so it becomes the default device.

I do not work here, but the benefits are still awesome
Make your sound your own!