Looky there. I learned something today. I didn't realize that.
Guess how I learned that? When I read @tombowlus review of My S10B. LOL. I wore a bit of egg on that detail. I really can't imagine the cost to a manufacturer for NL-4 only product to be that large. Boo on me for the error in part choice there, (NL-2's from the drawer went in the trash that day haha) but on a higher end amp? What reason for the NL-2?