Selling brand new Beyerdynamic Aventho Wireless on-ear headphones for £320 OBO (now £300). The come in all original packaging, carrying case, and cables. They have never been used - received them as a gift from work.
Uses aptX and aptX HD for highest quality audio, has 30 hours of battery life, and charges via USB-C. The accompanying app allows you to perfectly tune the headphone your ears - you go through a listening tests and it will adjust the EQ based on your own hearing.
These are one of the best sounding portable headphones on the market. From the What Hi-Fi review:
"Almost every aspect of the sound is superb. Mids are well integrated, detailed and consistently textured – from low to upper-mid. Vocals sound great as a result; they stand out without seeming artificially boosted or pushed. Treble is detailed and clean-sounding, but not outright bright. Bass is powerful for an on-ear headphone, and the Beyerdynamic Avento sub-bass surprises almost every time it kicks in. It’s far more assured than you might expect from small headphones; it isn’t obviously bass-focused. The soundstage, too, is wide for on-ear headphones, with well-above-average separation and spatial detail. They belong in a different class to most other portable on-ear headphones."