The H949 builds upon the foundation laid by the H910 pitch shifter, marking Eventide's first foray into glitch-free pitch shifting technology. Produced between 1977 and 1984, it introduced MicroPitch, a unique single sideband modulation method that allows precise control over subtle pitch variations. This innovation enabled musicians and producers to explore delicate tuning adjustments with clarity and accuracy.

Beyond its pitch shifting capabilities, the H949 offered a range of distinctive sound effects including flange, reverse, and randomized pitch shifts. These features gave artists new creative tools for sound design, expanding the possibilities for experimental and richly textured audio productions. Its combination of digital delay and pitch alteration made it a powerful multi-effects unit that could enhance and transform audio in unprecedented ways.

Favored by renowned musicians such as Jimmy Page and Suzanne Ciani, the H949 earned a reputation for its inspiring sound and flexibility. This plugin faithfully recreates the full feature set of the original hardware, including stereo widening, doubling, and linked reverse pitch effects. Whether used for subtle engineering or adventurous sonic exploration, the H949 continues to be a source of creative inspiration in modern music production.