To make these we take a stock pair of Sennheiser HD650 and modify the drivers by removing some of the damping and adding a bit of additional mass to the drivers to bring out a bit more detail and make them sound less veiled. We then pair them up with one of our ultra low capacitance cables to squeeze every last drop of goodness out of them. We have had a lot of good feedback from audio professionals in the music and movie industries about these for their clarity and balance. As standard they will come with a black and grey cable with a 6.3mm jack but if you would like a different colour or jack type just let us know and we can make you a custom cable but it may add up to 7 days to the deliver time as we normally have a bit of a queue for cables.
We are an official Sennheiser partner and offer a 2yr warranty on our modified headphones
If you have any question feel free to ask.