Can I record 2 guitars and 2 microphones at the same time with my Inspire?
No. The microphone input and the instrument input on the LEFT side share input channel 1. The microphone input and the instrument input of the RIGHT side share input channel 2. The instrument inputs will take priority over the microphone inputs. You can simultaneously record from channels 1, 2, and the RCA line level input channels 3 and 4 on the back of the Inspire 1394.