I'm writing from Italy, so forgive me for my bad English...:-)
I've got an Aragon 8002 and it has 4 binding posts/channel, like the 8008. If you open it, you can see that signal cables are connected directly to 2 outputs. The signal goes to other 2 outputs by metal "stripes"
My amplifier sounds very good only connecting speaker cables to the outputs that are directly connected, otherwise sound is dark, slow and confused.
I can't explain why, but I've tried many times whit the same response.
Best regards
Sandro