Hi, I have the nwa35 but I guess this could apply to the 45 & 55 as well. My headphones are Sennheiser HD 595, not sure if they’re 50 or 120 ohms. After a bit of tweaking on the player turning on the DC phase and some eq it sounds good, but then I thought I’d try it though the monitor side of my pioneer cd recorder with the headphones plugged into that. I have to say it sounds fuller like this. Not sure if this because the Sennheisers are better suited to the output of the Pioneer. I’m in Europe by the way & I keep reading about the EU volume cap. The player is loud enough for me but I’m wondering if removing it will give me the fullness that the output of the Pioneer does. In other words does the cap reduce the output voltage of the player.