- Improved Sync LFO and Envelope Follower.

​The 'F1 Filter Box' is a very handy sculpturing tool, based on a powerful multi mode filter, modulator and a fast and easy GUI. It can be used on any content - drum loops, samples, synthetic or natural content, to provide interesting musical ideas at very short setting time.

As all 'Raz Audio' processors, the F1_FilterBox is available as a free download.

Visit: razaudio.com/f1---filterbox