The Eventide H9 Harmonizer is a compact multi-effects unit delivering professional-grade sound in a rugged, pedalboard-friendly format. It combines delay, modulation, pitch shifting, reverb, and distortion effects, all powered by Eventide’s premium algorithms. The pedal features stereo inputs and outputs, MIDI in/out, expression pedal and auxiliary switch inputs, and is operated through a single central encoder, three parameter buttons (X, Y, Z), and two footswitches for preset control and bypass.
Parameter adjustment is intuitive, with direct access to key controls such as Time, Mix, Feedback, Filter, Speed, Depth, and more. Deeper functions are available via long-press commands or the H9 Control app, which connects via USB or Bluetooth. Each effect algorithm functions like a standalone pedal, making the H9 a powerful all-in-one solution for modern musicians. A 30-second stereo looper is also built-in.
This specific unit (serial number H9‑49619) includes a reverse polarity adapter cable—an essential accessory because the H9 uses a center-positive power input, unlike the center-negative standard used by most pedalboard power supplies. This allows safe and seamless integration with standard multi-output supplies.
Trusted by countless touring and recording professionals, the H9 is a favorite for its pristine tone, flexibility, and compact design.
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