Eventide H949 Harmonizer (1977–1984)
A rare vintage pitch-shifting effects unit known for de-glitched harmonization and studio use by artists like Prince.
Overview
The Eventide H949 Harmonizer is a vintage pitch shifter and effects processor developed by Eventide Clockworks. It succeeded the H910 and preceded the H3000, forming a key link in Eventide’s early effects lineage. Known for its de-glitched pitch shifting, the H949 allowed precise manipulation of audio timing and pitch, famously used to fit program material into specific time slots like a variable-speed tape recorder. It was also the heart of the Timesqueeze Jr. system. The unit is described as rare, with some units documented as serviced and sold. Prince reportedly used the H949 for stereo smear on hi-hats and shimmer effects in studio recordings.
Specifications
| Frequency Response | 20Hz-15kHz |
| Dynamic Range | 96dB |
| THD | Below 0.15% |
| Impedance | nominal 10 k, balanced, maximum level |
| Dimensions | 5.25" (H) x 4.65" (W) x 1.96" (D) / 133 (H) x 118 (W) x 50 (D) mm |
| Weight | Main unit 1.53lbs, 0.7kg / Box 3lbs, 1.36kg |
Design
The H949 was Eventide's first de-glitched pitch shifter, building on the legacy of the H910 Harmonizer. Its feedback chain uses a pair of 100k ohm log taper potentiometers to vary frequency response, with output amplified by an inverting op amp (1/2 of IC8). The unit includes a DELAY section as defined in service documentation, and when controls are centered, the feedback chain has approximately flat frequency response. Replacement parts require specification of board and IC numbers for accuracy.
Context
Positioned between the H910 and the H3000 in Eventide’s product evolution, the H949 played a foundational role in the development of programmable studio effects. It was integral to the Timesqueeze Jr. system, leveraging its time and pitch manipulation capabilities for broadcast and recording applications.
Market
The H949 has seen recent market values around $500–$700 for units in good to great condition, according to a 2021 Gearspace report. One user reported selling an H949 for $200 in 1999. While schematics exist in PDF form, repair is reportedly difficult—service centers may not support it. The unit is described as rare, with some units confirmed as serviced and sold.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.
Related Models
- Eventide H8000 (2000-2010)
- Eventide H3000 (1986-1998)
- Eventide H910 (1975-1984)
- EMT 250 (1976-1985)
- Lexicon 224 (1978-1985)
- AMS DMX 15-80 (1979-1985)
- Roland RE-201 (1973-1990)