“This is the legendary Harmonic Energizer pedal from Systech (Systems and Technology in Music, Inc.). It gets high ratings on internet reviews
and has been described as “rare as hen’s teeth”. It was used by several big name guitar players of that period. Systech states that the “Harmonic Energizer is a further step in a product originally developed … for Greg Lake of Emerson, Lake, and Palmer.” The Systech info sheet also lists Joe Walsh as a Systech endorser.”
“The name probably most closely associated with the Harmonic Energizer is Frank Zappa. This was one of his favorite pedals, though he may have modified it so all his pedals would be on one power source for a clean signal. Dweezil Zappa is currently touring with Frank’s old equipment, and this pedal is one that is mentioned in an interview about the tour.
“It is powered either by a 9V battery or with an optional (not included) external power supply. This is a new-old stock unit that comes in a Systech box (the box was switched with another at some point, whether in the store or before I don’t know, the serial numbers don’t match). It also has an info sheet that looks like it was mimeographed.”
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