Hello,
So I have a 2013 g37 with factory Bose (No Nav). I have taken all the stock audio out except for the head unit and added all aftermarket equipment including a Helix .3 DSP. I have read in several forums that the signal coming from the head unit is a full clean signal and that it is low level output. So my question is do I just add rca connectors to the front left and the front right output from the head unit and connect to the low level input or connect to the high level input of the DSP? Would I benefit from going one way or the other? Any help on this would be greatly appreciated! Thank You

 

Yes, the Bose head unit outputs are line level so those would be the inputs to use on your Helix box.