I’m new to headphones, but will be moving to a life-care community next month where I will need to play my audio at moderate levels even though the units are said to be well sound proofed with cement walls. I was impressed with my cousin’s McIntosh headphone amp driving Sennheiser 800S for loud large orchestrations. I will be using the headphone output of my Ayre QX-5 Twenty Roon-ready DAC to drive 800S, and I don’t know what to expect. Roon iis my primary source, I hope I don't have to buy a separate headphone amp.
(The QX-5/20 will be used with an Ayre AX-5/20 integrated to drive KEF Reference 1s as an alternate to my KEF LS60 setup.)