Hi OP,
Just my 2 cents here. I would steer clear of buying an amp until most everything else in your system is upgraded. I was in a similar situation as your self and really wanted an amp. The great folks on this forum told me it wouldn’t make a big difference (really any difference). However, I really wanted an AMP
. So I added a Monolith 5X (200w/ch) to my AVR. My AVR is very similar to yours (X4300H).
Do i hear a slight difference at very high volumes? I think so, however Im also the person who shelled out the cash. So i have a reason to want to hear a difference.
I truly believe in a Blind A/B test I would have trouble picking when my amp was on.
Save your money and or get something else.
BTW how big is the Room? How far away from the speakers is the listening position?