Too bad contacts

I had seen these criticisms in the comments but failing to find the product quality as the Sennheiser brand, I anyway folded product.
I use Sennheiser HD650 for a helmet that has the distinction of having a tip jack 6.35.
This adapter market early for some months.
And now we have to tamper with the connection might not hear with one ear ...
In summary, go your way and you have a reliable and quality, I am interested!
I wrote to Sennheiser, I will inform you if I get a reply that may interest you.
Enjoy shopping ... other than this one!