Eq problems

Hello everyone I just bought an upgrade to my headset. Got myself a Razer Nari Ultimate. But i have a problem. My old Razer Kraken version 1 sounds better because i cannot fin an eq anywhere to tweak the sound. The sound is so flat now and i downloaded synapse but there is no audio option there. Only for RGB and tweaking the ligh on the headset or pairing other razer products. How or where do i find the EQ so i can fix the sound on my headset. I tried downlad the 7.1 surround software but there i needed a long code wich i cannot find nor find out how to get. It should not be this hard ...huh. Please help