Short description of Blue Cat's Widening Parametr'EQ 3.5: " A powerful multi-band processor for stereo widening and narrowing" - Blue Cat's Widening Parametr'EQ is a 7 bands parametric Mid-Side equalizer based on Blue Cat's Parametr'EQ algorithms, enabling you to widen or narrow the frequencies of your choice. This special 'widening' version offers two independent equalizers for the mid and side channels with instant frequency response display.