I have a cheap, simple recording setup: a Behringer UMC204HD DAC interface and a Behringer C-1 microphone connected over XLR.
For some reason the input from the microphone peaks (clips) at precisely -6 dB in Audacity and other audio software, so I have to manually add gain in postprocessing to it to make it peak at 0 dB. The DAC doesn't have any sort of microphone boost feature that I know of that would affect this.
Is this some sort of a hardware limitation or a software incompatibility? I have tried the setup under both Windows and Linux so I suspect it's not a software thing.