You already had some answers by members friends here ...
And i think if you choose well a 400 bucks a power amplifier will go a long road ...😊
But take the time to decide between the power-amp and preamp option and the only integrated ...The best option can wait for you then wait for it reading about these choices and the market offerings ...
If i had money i will buy a LTA Berning ZOTL tube pre-amp + S.S. power amp ...
i live well with a low cost headphone and speakers system and i lack the experience to advise you about amplification and pre-amplification for sure... my best advise would be as i did,take a long time to pick it and read a lot.... I was happy only after doing this exploration between choices ... Dont let the fever for change push you to act prematurely ...
I wish you the best Christmas for you and your family ...🎄