Balanced cables (4.4mm, 2.5mm) are always more expensive than single-ended (3.5mm) cables. I run balanced inputs, outputs, cables, et as it offers better (cleaner) power.
Oh yeah. Much easier to drive than a P1 for instance. It's rated at just under 15ohms and 104db. When I first unboxed it, I plugged directly into my phone's own jack, and even without a dongle, I was surprised by how responsive it is. I suspect this may have been engineered with dongle DAC's in mind. ;)
I went for the 4.4 to use with my balanced DAC
It's really nice and soft. Good match IMO; very lightweight.
I already have a separate 3.5 mmcx cable for use on my phone anyway.
they can be linear depending if you want to change out the cable.... with the cable that it comes with its V shaped.... I put a very thin cable on them and they are very linear now....