Quick question: Im currently using a astro a40 audio system with the mix amp on my pc and would like to upgrade to the philips fidelio x1 or the beyerdynamic 990. I would like to use one of those headsets with the mix amp if it can power them properly (which i don't know if it can) but if it...

Ok, thanks for your input

Im brand new in this audio world so correct me if i get something wrong. So currently i have a Astro a40 audio system with the mixamp. I want to get the Philips Fidelio x1 but have read that if i want the best sound out of it, im going to need an Amp and possibly a DAC.  So my question is if my...