Eventide Clockworks Instant Phaser & H910 Harmonizer – Studio Legends from the Golden Age of Analog A rare opportunity to acquire two of the most iconic studio processors ever made — the Eventide Clockworks Instant Phaser and the Eventide H910 Harmonizer. These groundbreaking units from the 1970s helped define the sound of classic recordings by artists such as Led Zeppelin, David Bowie, Frank Zappa, and AC/DC, and remain highly sought-after by collectors, engineers, and producers worldwide. Eventide Instant Phaser (Model PS-101, circa 1972–1975) The world’s first studio phaser, offering lush, organic modulation and deep stereo movement. Unlike guitar pedals of the era, the Instant Phaser was designed for professional recording studios and features true analog circuitry with variable control for depth, rate, and manual sweep, plus remote control and oscillator sync options. Type: Analog studio phaser Controls: Manual phase, oscillator rate, depth, mix, remote input Circuit: Discrete analog all-pass network Era: Early 1970s, built in New York, USA Eventide H910 Harmonizer (circa 1975–1978) The first digital pitch shifter and harmonizer ever produced, the H910 revolutionized studio production with its unique ability to alter pitch and delay in real time. Praised for its warm, slightly gritty tone and unpredictable charm, the H910 became a creative tool for thickening vocals, widening guitars, and adding otherworldly textures. Type: Digital pitch shifter / harmonizer Pitch Range: ±1 octave Delay Time: Up to 112.5 ms Controls: Coarse/Fine pitch, feedback, delay, mix Connectivity: XLR balanced I/O Era: Mid to late 1970s, made in USA Condition: Both units are fully function, and maintained to studio standards. Cosmetic condition is excellent for their age, with all original knobs, switches, and front panels intact. These two units together represent a turning point in audio history — the moment when Eventide brought studio modulation and digital harmonizing into the modern era. Perfect for collectors, studios, or anyone who values true analog and early digital craftsmanship. Please see detailed photographs for condition of the items they form part of the description as you can see. Please note that we do not garantee vintage electronic items. These are truely vintage and quite possibly will need a service. Please note we pack with our custom double box and bubble wrap system and we pack for the safety of the items not for economy