Question

I'm using a OS 10.10.5

I am getting a weak signal with both a microphone and an instrument

Answer 1

Hi there. I recommend taking a look at this article - http://support.presonus.com/entries/21743465-Why-is-my-recorded-signal-too-low-or-quiet-

Answer 2

The solution may be to go into the Apple System Preferences and Audio: then check that the INPUT level is all the way to the right (full).  For some reason it is resetting back to the middle. I am not sure if the Audiobox just doesn't produce enough signal as I don't think it should be necessary to set the imput to full.