Eventide H910 Harmonizer

The Eventide H910 Harmonizer was a harmonizer/pitch shifter rack unit released by Eventide in 1974.

Eventide H910's were available at The Townhouse Studios in London during the late 70s, where Hugh Padgham worked as a staff engineer for some time. On records by Peter Gabriel (Melt) and Phil Collins (Face Value and Hello, I Must Be Going), Hugh Padgham used the harmonizer for effects on the vocals, especially for Peter as he "would feel naked without it". Hugh Padgham would later prefer the AMS DMX 15-80S delay/harmonizer for vocals.

Peter Gabriel eventually got his own Eventide H910, which was among his rack units for the Melt tour. He also had the Eventide at his home studio during the making of the So record (and possibly Security), but the AMS DMX 15-80S appears to be relied on more heavily.

Larry Fast also used the Harmonizer on synthesizers on the Melt album - for instance, the detuning of synths on "Biko". He also had one in his set of rack units on the Security tour.