The SHURE's DFR22E is featuring improvement to a patented Adaptive Notch Filter Algorithm, incorporates single-channel and stereo processing blocks with up to 16 precise notch filters that automatically seek out and decrease feedback. This signal processor has widths ranging from 1/10 to 1/70 of an octave, affect just the problem frequencies, enhancing system stability and sound integrity. Besides that, after a certain length of time, Auto Clear mode eliminates dynamic filters and restores the DFR to its optimal setting. The DFR22E's processing modules can be used in any order and on any input or output. Linking processors allows for more efficient global control and the duplicate processors across many channels by copying and pasting processing blocks to any input or output. Even better, DFR22 also supports real-time design changes, allowing user to add, remove, or change processing blocks while tuning the system. It simplifies the setup process.