I'm glad to see that there are cheap cables available on amazon. thanks very much for that
as for weight, its not an issue because the DAP usually sits in my jacket breast pocket or if its summer, my jeans pocket or in my backpack.
as for power output, i do use the DT1990 pros, B&O H6 Gen II, and in future im hoping to buy the Audeze LCD2C(Classic) and possibly a AKG K712 Pro. i might even get a Mr.Speakers Aeon (undecided if open/closed) so these headphones mentioned do require some power. I'm not an IEM user so, i would def require more power if the Sony can't handle it
I've tested the LCD2C with my WM1Z, seemed to have enough power, they sounded pretty good. My reference headphones are Focal Clear, personally I think they are a better headphone, sound and comfort. Of course this is my preference so....I'd recommend giving the Focal range a listen if possible. The Massdrop Elex is pretty much the Clear model but at have the price, and The Elear model sounds almost identical to both models with the Clear pads. The Utopia models are also fantastic, but too much for me to spend and didn't think the sound upgrade was justifiable. Cheers!