John Frusciante’s Electro-Harmonix Electric Mistress Flangeraccess_time First seen circa 2005
According to John, this pedal can be heard on the bridge section on the song ‘Hard to Concentrate’, from RHCP’s 2006 album ‘Stadium Arcadium’.
The EHX Electric Mistress Flanger was also allegedly used on ‘By the Way’ album – but further research is needed on this.
Please note that John most likely used an older version of the pedal, which now you can only buy from second-hand stores since EHX replaced it with a newer version. In case you want to get something similar, I haven’t done much research, but realistically, there shouldn’t be much difference between it and the newer Electro-Harmonix Deluxe Electric Mistress XO.