I forgot to mention that the power hum removal one I made was for use with bass male voices that have a hard time getting rid of the power hum without destroying the vocals… And the high treble cut looks more likea mid range cut but that was also for specific requirements such as songs where the bass is almost gone and theres a lot of treble and mid range. This will help in getting it back to work able levels then you can use the others you have to fix it more properly.