Classic flanger back again .Flanger is two pedals in one package. One section is a traditional chorus flange (TAXI); the other is an insane (TAKEOFF) flange (hence the ''AIRPLANE'' moniker), which provides virtuoso guitarist Paul Gilberts own ''Crazy Flange'' sound. Time to buckle up. The AF2 features Manual (delay time), Speed (modulation speed), Range (depth of modulation), and Enhance (feedback) controls.