TBProAudio has released sTilt, a free linear phase filter which tilts the audio spectrum around a given center frequency.
![[FREEWARE] TBProAudio sTilt phase filter](https://img.audiofanzine.com/img/product/normal/2/4/247549.png?fm=pjpg&w=334&h=243&fit=contain&s=350feca4ccd499151249495d93578811)