Hi, I have a4300 and want to deliver more power to my speakers I have 1 set of Morel Tempo 6 and 1 JL AUdio 10w3v3 subwoofer.... I am little under powering them and want a little more power. I don’t want to move a second amp. I have seen that JBL GTO 1004e has a decent internal improvements to gto 75.4 as electronic vise (comparing internal pics..) however there very a few who uses 1004e and can deliver decent information regarding to them. Am I going to sacrifice sq if I replace a4300 with gto 1004 ? What do you think?