That’s a valid criticism about not giving it a chance, but...I’m new to the dsp world and just want ease as well as the most of of the equipment I purchase no matter what the price is. Had a chat with a rep from Dayton and their statement basically is the dsp408 is every bit as adaptable to oem integration as well as being able to sum signals he referred me to page 8 in the manual.
The manual is pretty subpar especially if you’re not familiar with a dsp
http://www.daytonaudio.com/media/resources/230-500-dayton-audio-dsp-408-user-manual(2).pdf