With auto attack and release controls and separate precision LED displays for gain reduction, compression threshold, and gate threshold, the 166XL allows for quick and accurate setup. Using our True RMS Power Summing™ feature, the Stereo Couple mode provides you with a rock solid stereo image The 166XL also makes advanced applications a breeze with full sidechain functionality, the ability to use either hard knee or OverEasy® compression algorithms, and the venerable PeakStop® limiter. Designed in the USA, the dbx® 166XL processor puts a completely new level of compressor/ gate performance at a cost within everyone’s reach.