Proud first owner in UK. I think the 80s are very distinctly improved update.i vaguely remember the originals being of high quality, but too dark for my taste meaning yes..bass but a little on the vailed side. These new babies are way more balanced and refined and very detailed listen with one of the best ergonomics in the business. New cable is fab but i also ordered 4.4 balanced from Null Audio for ZX300 as well as standard 3.5 copper.lets see.. I am gonna give them plenty of burn in time as the DD will likely improve much after 200h or so but the enjoyment is there and the fullness of sound is special next to much more expensive iems sounding clearer but thinner. Few friends that are musicians like myself but (typically )dont spend or care about headphones but know good sound when they hear it, basically no expectations tried them next to Xelento, Oriolus 2 aurisonics harmony and prefered them for having fun full sound! They do indeed immediately remind you of Senns Pro gear and hd25s. One other thing is they upscale fantastically with better amps! Very excited about IE800s too and 4.4 option which also feature on the new desktop amp. Sony and Senns in Harmony, world's getting better☺❤ Will likely buy it first again haha Seems to be round the corner This is real German quality guys!!!