ZOMA Stereo Reverb and Tremolo
$229.00
Our most High Fidelity pedal to date
Intuitive Control Layout and Easy Access to Alternate Controls
Instant Effect Order Switching
True Bypass or Buffered Trails
The latest batch of Silver and Black ZOMAs begin shipping 01-30-2025
ZOMA Stereo Reverb and Tremolo
Meet the ZOMA Stereo Reverb and Tremolo – Our most high-fidelity pro Reverb and Tremolo ever!
ZOMA Stereo Reverb and Tremolo
The latest batch of Silver and Black ZOMAs will begin shipping on or before 01-30-2025
Incredible stereo reverb and tremolo with the Zoma
The first sound effects built into amplifiers were tremolo and reverb. Keeley’s legendary reverbs are paired with their sultry, vocal-like tremolos to give you an unreal sonic experience.
Zoma Key Features
- 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.
The Zoma is more than just a pedal – it’s your signature. Reverb and tremolo effects crown any player’s pedalboard. Trust Keeley reverbs for an inspiring “always-on” sound.
Three Reverb and Trem Modes:
We’ve combined the most popular ‘Verbs and Trems into three different pairs. There’s nothing quite like the syrupy smooth sound of our Plate Reverb combined with Harmonic Tremolo.
- 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 and 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 and 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 and Ease of Use
- Artful Electronic Circuitry: Housed in a proprietary angled aluminum enclosure for simplicity and durability.
- We stand behind EVERY Keeley pedal: Proudly Designed and Manufactured in the USA.
Upgrade Your Sound
Explore new sonic possibilities with the Zoma Reverb and Tremolo pedal. Prepare yourself for stereo, high-fidelity reverbs and luxurious tremolos.
Zoma Highlights
- Reverb: Experience the ultimate reverb with the Keeley ZOMA, featuring two immersive modes: the lush, vintage-inspired Spring Reverb and the rich, expansive Plate Reverb—delivering true stereo sound that transforms your tone with precision and depth.
- Tremolo: Immerse yourself in the rich textures of the Keeley ZOMA’s three distinct tremolo modes: classic Sine Wave Tremolo, vibrant Harmonic Tremolo, and dynamic Pitch Vibrato—crafted for true stereo sound and unmatched tonal versatility.
The Keeley Electronics ZOMA features true-stereo in and out.
ZOMA Specifications
- 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: 2.7”
- Width: 3.9”
- Depth: 5”
Unlock new dimensions of sound with the Zoma Reverb and Tremolo pedal!
Instruction Manual
The ZOMA is the winner of Premier Guitar’s Premier Gear Award!
The 3rd batch of Silver ZOMAs will begin shipping on or before 11-27-2024
Keeley Electronics ZOMA Stereo Reverb and Tremolo – Custom Shop Black
Every ZOMA is hand-assembled by our incredible team in Oklahoma, USA.
Be sure to read the new ZOMA review blog by Nick Ecker.
8 reviews for ZOMA Stereo Reverb and Tremolo
You must be logged in to post a review.
deathbeak –
You need to check this pedal out! The Strymon Flint is one of my oldest pedals. This is the only thing I’ve played that sounds better. Easy to use, you honestly can’t make this thing sound bad. Whatever is going on inside to create these tones is next level. A absolute must have if you enjoy playing the blues.
*Purchased from Guitar Sanctuary in Texas*
jfoxvol (verified owner) –
Permanent fixture to the end of the board. I bought a really great tube amp with spring reverb and tremolo that it was known for. A month later, this pedal comes out and I just use the pedal now. Plus, the harmonic and plate mode is just beyond next level good. I already loved the hydra I had but this is tiers above it in sound quality. Might have to get a second one for my small board as well. It’s just that good. Couple that with the simplicity while having all the features you need, it’s a home run.
pablov23 (verified owner) –
The Zoma Stereo Reverb and Tremolo isn’t just a pedal; it’s an experience. I’ve never been one to gravitate toward tremolo as an effect—it always felt like a niche tool in my rig. But Zoma’s three distinct tremolo modes have completely reshaped that perspective. They don’t just work; they inspire. Each mode effortlessly complements my playing style, weaving in a level of musicality that feels organic and intuitive. This isn’t just tremolo—it’s tremolo reimagined.
And the reverb? Let’s talk about the reverb. I’m picky—obsessively so. As a diehard Keeley Caverns user, I thought my board was set for life. Then Zoma came along and, well, my Caverns had to step aside. The reverbs on this pedal are lush, immersive, and endlessly versatile. Whether I’m channeling that expansive Incubus tone, diving into the atmospheric depths of “Space Lion” by The Seatbelts, or just adding an always-on presence to round out my sound, Zoma delivers. It’s Hi-Fi brilliance wrapped in Keeley’s signature creativity and precision.
This isn’t just a pedal that fills space; it creates it. For me, it’s become the end-of-signal-chain anchor—the go-to tool for inspiration, tone-building, and sonic exploration. If you’re looking for something that does more than enhance your sound—something that transforms it—Zoma is that pedal. Keeley has outdone themselves with this one.
Ted Jackle (verified owner) –
Words don’t do justice, but I’ll try. Everyone I know who has tried the Zoma is blown away. After a quick A/B, I quickly put the footswitch for my Princeton’s spring reverb away. If you’re chasing that classic Fender amp verb sound, the Zoma nails it. The plate reverb is a high fidelity dream that covers everything subtle atmospheric sense of space to a lush pad that stays beneath your live playing beautifully. As for the other half, the sine, harmonic trem and vibrato all really shine in stereo mode which adds a touch of panning for a 3 dimensional sound. One of my favorite sounds is to max out the plate verb running into a bit of subtle vibrato. The slowly oscillating pitch in the trails giving a nice bit of motion and texture behind my playing.
I can’t say enough good things.
matt –
I’ve been a fan of the Keeley Hydra since it was first released, it is immense.
At first Keeley fans like me thought this may have been a Hydra core, like what happened with the Halo delay.
But that is not the case here.
With the Zoma it is more like an evolution and a simplification from the Hydra.
On the one hand there are less features with Zoma but Hydra is still there if you need those.
What you do get is serious audio quality! And a very smooth user interface all in the delightful new Keeley inhouse designed and built case format.
The Spring and Sine combination goes from sounding like the backend of your Fender style amp all the way through to creating complex dreamy textures that seem to stay out of your way while you play over them… With a little delay in front, it almost behaves like some kind of random evolving pad generator – at least to me it does!
The plate reverb is lush and you can dial in a beautiful harmonic tremolo in the PH mode.
While the PV mode adds vibrato from subtle almost filter like qualities to way out alien warbles….
The ability to change order really has a great effect in taming the tremolo slightly to allow for softer ambience if required…
As you can probably tell, I absolutely love this pedal and it has been the catalyst to returning to experimenting with a Wet Dry Wet signal path where this really shines…
Thank you to all at Keeley Electronics for your commitment to bringing us such capable kit to aid our sonic journeys.
Buy one, heck buy two!
Cheers,
MEB.
benjamintke430 –
The updated versions of the Hydra reverb and tremolo are second to none. This is the first combo verb and trem to sound better than my trusted Flint. The alt reverb tone control really helps dial in classic amp style or modern digital tones.
MICHAEL MUILENBURG (verified owner) –
Simply amazing. The best sounding classic reverbs, incredible tremolo options, and a very simple to use pedal layout. This is the new standard of sound and pedal design! I really like the long tail reverb (on the verge of feedback) and the ability to level or boost the tremolo volume, plus the large knobs and the black finish look great. My new, always on pedal.
ledbeatles85 (verified owner) –
The Zoma has the greatest Plate Reverb I’ve ever heard. The Spring is incredibly amp-like, you’ll be shocked that it’s not a Twin. The Tremolos are all extremely amp-like and natural. The Harmonic Tremolo is chewy and wonderful. The secondary functions are super intuitive. Finally, the Vibrato is the only one I’ve ever played that’s inspiring and not annoying!