I also just created an account to let you know that I still have the issue.
I bought the HS70 a year back and I had these problems from day one. I hoped that the problem was just a software issue and that corsair would fix it. I really love my K63 keyboard but seeing how corsair handles the obvious problems (or doesn't at all) just makes me not want to buy any other product from them.
The problem with the HS70 seems to be an unfixable one and it's just a shame that corsair doesn't recall the devices that have this issue as there seem to exist quite a lot of them.
I just can't believe that the people designing that headset were deaf enough to not hear the noise as it is extremely annoying. Releasing a product like this to your customers is just unacceptable.
