https://www.whathifi.com/akg/k550/review
What Hifi 5 star headphones 2016 Winner.
RRP £250
In used but very good condition. No notable wear on leather ear pieces.
Does not come with original box or 3.5mm to 6.5mm adapter though the later can be bought for a few pounds online.
Will plug straight into a 3.5mm input.