The Keeley ZOMA is a pro-grade stereo reverb and tremolo pedal that redefines how these classic effects interact. Featuring three reverb and tremolo combinations, instant effect order switching, and a choice between true bypass and buffered trails, the ZOMA is built to be an “always-on” inspiration machine. Whether you’re chasing the classic black-panel amp sound or pushing into ethereal modulated reverb textures, ZOMA delivers with stunning fidelity and ease of use.
Key Features
- High-Fidelity Stereo Processing – Breathtaking, spacious reverbs and smooth, dynamic tremolos.
- Three Reverb & Tremolo Modes – Classic Spring/Sine, lush Plate/Harmonic, and dreamy Plate/Pitch Vibrato pairings.
- Effect Order Switching – Reverb before tremolo for authentic amp-like response or tremolo before reverb for swampy, atmospheric tones.
- Alternate Controls – Fine-tune Reverb Decay, Tone, and Tremolo Boost Volume via easy-access alt controls.
- True Bypass or Buffered Trails – Choose pristine bypassing or natural effect trails.
- Pro-Quality Build – Housed in a durable aluminum enclosure with an angled design for easy live adjustments.
- 9-18V Operation – Increased headroom with higher voltage power supplies.
Detailed Technical Specifications
Audio Processing
- 100% Analog Dry Path – Ensures uncompromised signal integrity.
- Digital Reverb Processing – High-fidelity stereo reverbs with Keeley’s signature depth.
- Advanced Tremolo Engine – Three modes with ultra-smooth wave shaping.
Effect Processing
- Spring Reverb – Classic amp-style tube spring reverb emulation.
- Plate Reverb – Bright, spacious, studio-quality plate reverb.
- Sine Tremolo – Smooth, vintage amp tremolo effect.
- Harmonic Tremolo – Phase-split tremolo with lush filtering, similar to classic tube amps.
- Pitch Vibrato – Detuned, vocal-like modulation for a dreamy, tape-style effect.
Signal Chain & Routing
- Instant Effect Order Switching – Choose reverb before or after tremolo at the press of a switch.
- Stereo In & Out – Perfect for stereo rigs, multi-amp setups, and studio applications.
Inputs & Outputs
- Stereo 1/4" TS Inputs & Outputs – Full-range connectivity for complex pedalboards and studio setups.
Looper & Rhythm Features
- N/A – No built-in looper or rhythm machine.
Control & Display
- Three Primary Knobs:
- Reverb Level – Adjust the amount of reverb.
- Tremolo Rate – Controls tremolo speed.
- Tremolo Depth – Sets tremolo intensity.
- Alternate Controls (Hold ALT Switch):
- Reverb Decay – Adjusts reverb length.
- Reverb Tone – Controls brightness of the reverb.
- Tremolo Volume – Boost or reduce tremolo volume.
Power & Build
- 9-18V DC, 150mA (High-current power supply required, no battery option).
- Durable aluminum enclosure with an ergonomic angled design.
- Dimensions:
- Width: 3.9 in / 99 mm
- Height: 2.6 in / 66 mm
- Depth: 4.9 in / 124.5 mm
Perfect for Every Setup
The ZOMA fits effortlessly into any rig, whether you’re a traditional guitarist, experimental soundscaper, or ambient musician. The true stereo capabilities open up rich, immersive soundscapes, while the ability to switch effect order lets you shape your tone in unique and inspiring ways. Use it as an always-on amp-style effect or push it into deep, modulated textures—ZOMA adapts to your sound.
Conclusion
The Keeley ZOMA Stereo Reverb & Tremolo is more than just an effect pedal—it’s a sound-shaping tool designed for serious musicians. With industry-leading stereo reverbs, dynamic tremolos, and flexible routing, it delivers endless sonic inspiration. Whether you crave classic tube-amp-style effects or modern ambient textures, the ZOMA is the ultimate pedal for reverb and tremolo enthusiasts.
Step into the ZOMA. Let your tone breathe.
