Sorry at the first place.
The price of 4700H is 30% over 3700H in my region, sorry for my poor mis-understanding at the first place.
I had my drawing at #5, https://www.audiosciencereview.com/forum/index.php?threads/do-not-know-anything-i-can-improve-for-my-avr-set.32208/post-1133691
Basically...