The Electro Harmonix Stereo Electric Mistress is flange/chorus effect pedal with a colorful and seductive stereo.
The Electro Harmonix Stereo Electric Mistress uses a Filter Matrix mode to manually flange your sound or select a flange point allowing musically frozen tonalities. This is the only pedal where lush Stereo Flange and Stereo Chorus work together seamlessly for the richest modulations that undulate and flow over any stage or recording.
The Electro Harmonix Stereo Electric Mistress effect pedal main features include:
Truly independent stereo outputs.
Individual flanger.
Individual chorus.
Chorus and flanger may be used together.
Filter matrix mode available allowing you to manually sweep the flanger.
DigiTech Whammy DT
Boss OC-5 Octave
Boss CH-1 Super Chorus Pedal 
TC Electronic SCF Gold Stereo Chorus
TC Electronic June-60 V2