So after having two pairs of 750's I think my view on the earphones are very much different
Packaging is top notch, build of the earphones themselves are amazing, they feel super high quality. Little touches like the metal that the ear tips come presented on, the carry pouch and overall presentation screams quality.
After sorting through my wide range of tips, set on small single flange and foam tips.
Onto how they sound. Well terrible to put it short.
The bass sounds like it is capped at 60Hz, nothing below that is audible. Mid range is far too forward and the treble is super harsh to the point where I cannot listen to them for more than 10 minuets at a go. Overall terrible and to add, the right driver has driver flex.
After excellent customer server and reading of more reviews, I got my hands on a second pair and left them to burn in for a full week. Why? What Hi-Fi had similar thoughts with their pair but after a week long burn in sounded like a whole new different pair of earphones, similar to everyone's reviews a solid 8/10 pair of earphones.
So here I am a week later, not a single thing has changed, the bass still terrible, mid range has toned down a bit and damn the treble is still so harsh it just hurts.
Just thought I would add my own thoughts.
(My previous headphones for reference to what sound I am used to: CAL!, ATH M50, HD650 / DTX101ie, Brainwavz M4, Monoprice 8320)