Hello, intenso
Do you remember me hehe?
I returned to Denon again, but to 1520 AE

well, unfortunately, after comparing Pioneer A-30 with Denon PMA 720 AE Pionek softened
I have a relevant question for CB about this
Added after 5 [minutes]: Egg19121982 - Connect the receiver with a 2.5mm two-core cable
from the Front L exit under the upper left column terminals - / +.
from the Front R output to the upper right-side terminals - / +.
After connecting, calibrate the receiver.
Regards.