I have an upcoming music performance that I want to capture onto a DR40 in 4 channel mode, with the 2 external inputs coming from the house Behringer XR18 mixer. The house is suggesting I capture the output from the mixer's TRS headphone output. However, I'm not sure how to do that, because wouldn't splitting the L and R channels reduce the TRS signal to TS, which the DR-40 can't handle? What's my best option here? If the headphone output isn't the right way, would getting the signal from 2 AUX outputs ( for stage monitors / headphone mixers according to the manual) be better, or would that signal be too high for the DR-40 to handle? I pretty much have one shot at getting this right, as I don't have access to test this setup out in advance, so I'd appreciate help in getting it nailed down right here.