
Keeley Electronics ZOMA Guitar Effects Pedal
Keeley Electronics - ZOMA, Stereo Reverb and Tremolo Pedal
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Stereo Reverb and Tremolo
Keeley - ZOMA

Keeley's most high-fidelity pro Reverb and Tremolo ever!The Zoma is more than just a pedal—it’s Keeley’s most high-fidelity pro Reverb & Tremolo yet. Designed for musicians who demand inspiring, immersive sound, it delivers studio-quality reverb with lush, expansive depth and tremolo that feels smooth and organic. With Keeley’s renowned reverb algorithms, the Zoma offers an always-on shimmer that enhances every note, while its vocal-like tremolo adds expressive movement to your tone. Whether shaping subtle waves or pushing dynamic textures, this pedal provides effortless sonic sculpting with uncompromising quality.
at a glance
• Three different reverb/tremolo modes
• LED optionally indicates the speed of the tremolo effect
• Soft stomp footswitch for tremolo and reverb / alt
• Intuitive Alt control options provide full access to additional effect parameters
• True Bypass or Buffered Bypass (switchable)
• Switchable effect order

'The Zoma Is More Than Just A Pedal – It’s Your Signature'
• Simple Control Layout: Three large knobs give you maximum control over Reverb Level and Rate and Depth for Tremolo.
• Easy Access Alt-Controls: Reverb Decay, Reverb Tone, Tremolo Volume.
• Instant Effect Order Switching: Choose which signal path is right for you. Put your tremolos after the reverb for a vintage correct, black-panel tone. Experience a dirty, swampy tone with harmonic tremolo on top of reverb.
• True Bypass or Buffered Trails: You chose what sounds and works best in your rig.
Three Reverb & Trem Modes
• SS – Spring Reverb and Sine Tremolo: Classic black panel amplifiers had spring reverb followed by a sine wave tremolo (at the power tubes).
• PH – Plate Reverb and Harmonic Tremolo: Smooth reverb with swampy harmonic trem, what’s not to love?.
• PV – Plate Reverb and Pitch Vibrato: Vocal smooth vibrato with other-worldly reverb.
Reverb - Sounds & Controls
• Spring Reverb: Tube amp spring reverb – we simulate every detail of that classic vintage reverb sound.
• Plate Reverb: Bright, smooth reverb from a thin vibrating metal plate.
• Reverb Decay: (Alt feature) Hold REVERB/ALT SWITCH down while adjusting Level knob.
• Reverb Tone: (Alt feature) Hold REVERB/ALT SWITCH down while adjusting Rate knob.
Tremolo - Sounds & Controls
• Sine Wave or Volume Tremolo: Sine wave tremolo simply adjusts the volume of the signal up and down.
• Harmonic Tremolo: Just like tube-amp harmonic tremolo, your guitar signal is phase-split and filtered, almost like a phaser.
• Pitch Vibrato: Bends the notes out of tune, you control how far and how fast.
• Alt-Control-Tremolo Boost Volume: Hold REVERB/ALT footswitch down while adjusting Depth knob.
Stunning Design & Ease of Use
• High Octane Circuitry: Housed in a proprietary angled aluminum enclosure for simplicity and durability.
• Tough Wearing: Proudly Designed and Manufactured in the USA.
Keeley Electronics ZOMA Stereo Reverb and Tremolo - Ariel Posen Performance

The Tech Spec
Features | Specification | Pedal Type | Reverb and Tremolo |
---|---|
Analog/Digital | 100% Analog dry signal – Digital Reverb |
Effects | Spring and Plate reverbs, Sine, Pitch, and Harmonic Tremolos |
Inputs/Outputs | TS 1⁄4” jacks |
Bypass | True Bypass or Silent Buffered Bypass, user selectable |
Power Requirements | 9-18 VDC, 150mA (high current power supply sold separately) – No battery |
Dimensions | Height: 2.6” Width: 3.9” Depth: 4.9” |