EQ4™ 6 Band Equalizer with AIR BAND. Following its EQ3 and EQ3-D predecessors, the EQ4 provides unparalleled transparency and top end presence while maintaining the true natural sound behind the mix. EQ adjustments are obtained with minimal phase shift and detent controls allow for easy recallable settings. The EQ4 offers the legendary AIR BAND™ and five other sonically superior band passes. Hear it on vocals: Madonna, Celine Dion, Black Eyed Peas, Snoop Dogg, etc.