Electro-Harmonix always had a way of taking sound effects to the absolute limits. The maximum setting of most chorus pedals are where the Clone Theory starts. The Chorus and Vibrato setting are very potent and will completely consume your sound when stomped. Most players younger players discovered Electro Harmonix's modulation pedals in the wake of Nirvana. Capturing Kurt's unmistakable blur of chorused leads and slurred noise bursts is a snap with the Clone Theory. While there are other flavors of chorus on the market, the Clone Theory sounds the most liquid and drips with submerged bubbliness. The Vibrato section is a wonderful take on the wavering Magnatone sound of the late fifties and early sixties and sounds stunning. Later models of the Clone added a flanger setting which comes off as pretty lackluster compared to the company's dedicated Electric Mistress unit.