You need to make strategic cuts and boost on your tracks so Brain Peak instruments in the same frequency range do not mask each other. For instance the Kick drum and the bass guitar both sit in the low end of the frequency spectrum. If you boost the kick drum at 65kHz, you should not boost your bass guitar at 65kHz. You should actually cut your bass guitar at 65kHz and boost it someplace else, like 250Hz and if you boost your bass guitar at 250Hz, then you need to cut your kick drum at 250Hz. http://guidemesupplements.com/brainpeak/