Razer Kraken Ultimate
Cable
Razer Kraken Ultimate
Cable
To answer this question, you would have to own both headsets to be able to compare them.I bought the Razer Kraken Ultimate based on various tests you can find on the internet. I am completely satisfied with it and would buy it again in a heartbeat if there was a reason to do so.
I have never tried the Razer Blackshark V2. But I am quite satisfied with the Ultimate, I can recommend it.