Hello I am interested in this player but I have to clarify a fundamental doubt about the power output of headphone jacks (both unbalanced and balanced). I am currently using a Shanling M2S with an output impedance of 4.8 ohms and the result is good at the sound power level. Does Sony NW-ZX300 output impedance offer more output power than the Shanling M2S? I use the following Iems and headphones: JH Audio Michelle JH Audio Rosie Denon AH-D7200 (impedance of 32 but likes the loud volume) I'm a bit deaf and I like to listen at a high volume. I suppose that with JH there should be no problem but with the Denon I do not have anything clear. The power of the Sony NW-WM1A is much higher to pay the difference in price or not worth it? Can you clarify my doubts please?