Empress Zoia Modular Synth Pedal

Retailing in the region of £539.00

On the menu for January 2026 are the Empress Guitar Pedals, freshly added and carefully selected. These New units are available to order online with fast, secure delivery from trusted UK retailers. Read on for full details, specifications, demos, videos, reviews, and the best places to buy the Empress Guitar Pedals today.


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On the menu for January 2026 are the Empress Guitar Pedals, freshly added and carefully selected. These New units are available to order online with fast, secure delivery from trusted UK retailers. Read on for full details, specifications, demos, videos, reviews, and the best places to buy the Empress Guitar Pedals today.

Here's what Empress says about the Zoia:

The ZOIA is basically a modular synthesizer in pedal form. Instead of being a delay effect or tremolo, the ZOIA provides the modules necessary to build a delay or tremolo from the ground up. But since you're the one building it, you can make it do whatever you want. With the ZOIA you can build your own custom effects, synthesizers, midi controllers, and virtual pedal boards. And to make life a little easier, we've created modules for all your standard guitar effects. So for instance, if you want a phaser, you can just plop down a phaser. You don't have to break out the textbooks to learn that they're built out of all-pass filters. (Of course, if you're a nerd like us, you can use the ZOIA to build them out of all-pass filters).

Key Features

  • 80+ Modules and Growing – ZOIA comes packed with a vast collection of modules to create just about anything you can dream up. With ZOIA the only limit is your imagination!
  • Create your own effects, synths, control devices, and more! – Oscillators, LFOs, filters, bit crushers, envelope followers – these are just a handful of the included modules that can be connected in almost any way imaginable. If you can dream it up, you can create it!
  • 20+ Ready-Made Effects Modules – Pre-built effects modules such as reverbs, delays, chorus', flangers, overdrives and more.
  • Up to 64 Patches – Create and save up to 64 patches that can be easily recalled during live performance.
  • Swap and Share Patches – Join the community of ZOIA users on patchstorage.com to try out other users patches, or upload your own awesome creations to share with the world.
  • SD Card Included – Load and save patches to/from ZOIA. We're also continuously improving the firmware by adding new modules and features, and fixing bugs. Download the newest firmware from empresseffects.com and load onto the ZOIA with the included SD card.
  • OLED Display Screen for Easy Editing – View all of ZOIA's module and parameter information on the high resolution OLED display screen.
  • Control Port and MIDI Connectivity – Dedicated control port and MIDI 1/8" in/out jacks allow you to connect a huge range of external devices to control any or all of ZOIA's functions and parameters. 1/8" to MIDI dongles included.
  • Customizable Patch Recall System – The on-board stompswitches can be used in either scrolling- or bank-style preset modes, for quick on-the-fly patch recall that suits your workflow.
  • Built-In Help – Almost like having a built in manual, the dedicated help function will give you quick information at a glance about ZOIA's various modules and options.
  • High-Quality Audio – 48kHz sampling, with 24 bit conversion and 32 bit internal processing.
  • Low-Noise Signal Path – Features extremely low noise operation with a signal to noise of >105dB

Specifications

  • Input Impedance: >= 1MΩ
  • Output Impedance: 100Ω
  • Frequency Response (-3dB): 10Hz – 23.4kHz
  • Total Harmonic Distortion: 0.22%
  • Dynamic Range: 105.5 dBA
  • Input Headroom (no pad): +0.5 dBu
  • Input Headroom (6dB pad): +5.7 dBu
  • Input Headroom (12dB pad): +10.8 dBu
  • Output Headroom: +16.2dBu
  • Power Input Connector: 2.1mm Barrel Connector
  • Power Input Voltage: 9V DC (center negative)
  • Required Current: 300mA
  • Height (enclosure only): 1.75”
  • Height (including controls): 2.625”
  • Length: 5.7”
  • Width: 3.75”
  • Weight: 1.5lbs

Additional information

Weight 2 kg

Brand

Empress

Category

Guitar Pedals

Tags

Chorus

Delay

A delay pedal records your signal and plays it back after a set time, creating echoes that can range from tight, slapback repeats to long, atmospheric trails. It’s one of the most versatile effects, used to thicken tones, add rhythmic depth, or build spacious, ambient layers. Analogue delays offer warm, decaying repeats that blend naturally with your tone, while digital units provide pristine echoes with precise control over time, feedback, and mix levels.

From classic rockabilly and tape-style echoes to modern looping and shimmer effects, delay pedals have become essential tools for shaping sound. They can make solos soar, rhythms pulse, or transform simple chord progressions into cinematic textures. Whether used subtly to add dimension or boldly to create soundscapes, a good delay pedal can completely redefine the feel and atmosphere of your music.

Distortion

Distortion pedals take your clean guitar signal and transform it into something bigger, bolder, and full of attitude. By clipping the waveform, they add sustain, bite, and aggression, creating that thick, compressed tone that’s powered rock music for decades. From the growling crunch of classic hard rock to the tight, saturated roar of modern metal, distortion is all about energy and presence. It gives every note weight and authority, pushing your amp to its limits and beyond.

There are countless flavours of distortion, each with its own texture and edge. Some sound smooth and creamy, others raw and gnarly like tearing fabric. It’s the sonic equivalent of turning up the heat until the sound cooks — rich, sizzling, and perfectly seasoned to taste. Whether used for rhythm muscle or soaring leads, a good distortion pedal doesn’t just add volume; it adds personality, grit, and that unmistakable sense of power under your fingers.

envelope filter

MIDI

MIDI pedals use the Musical Instrument Digital Interface standard to communicate with other guitar pedals, effects units, and hardware. They allow control over presets, parameters, and switching across multiple devices from a single controller. MIDI integration makes it possible to build complex, synchronised pedal setups while keeping control simple and consistent.

New

This is brand new, fresh in, and a UK warranty is included. New Gear always comes from trusted UK music retailers.

Phaser

A phaser is a type of guitar effects pedal that creates a swirling, sweeping sound by modulating the phase of the audio signal. It works by splitting the incoming signal into two paths, shifting the phase of one path, and then recombining them. This creates peaks and troughs in the frequency spectrum, resulting in a distinctive, “phasing” effect characterized by moving notches in the frequency response.

Here’s how a phaser pedal typically works and some common features:

1. **Rate**: The rate control adjusts the speed at which the phase-shifting effect oscillates. Increasing the rate produces faster modulation, creating a more pronounced swirling effect, while decreasing the rate slows down the modulation for a smoother, more subtle effect.

2. **Depth**: The depth control adjusts the intensity or depth of the phase-shifting effect. Higher depth settings result in more pronounced peaks and troughs in the frequency response, while lower settings produce a more subtle modulation.

3. **Feedback (or Regeneration)**: Some phaser pedals feature a feedback control that determines the amount of modulated signal fed back into the effect. Increasing the feedback creates more pronounced peaks and troughs in the frequency spectrum, resulting in a more intense and resonant phasing effect.

4. **Stages**: Phasers typically have multiple stages (usually four, six, or eight), each of which contributes to the overall phase-shifting effect. More stages generally result in a more complex and textured phasing sound.

5. **Sweep (or Manual)**: The sweep control adjusts the center frequency of the phase-shifting effect. This allows you to focus the phasing effect on specific frequency ranges, altering the tonal character of the modulation.

6. **Resonance (or Feedback)**: Some phaser pedals feature a resonance control that emphasizes the peaks and troughs in the frequency response, creating a more pronounced and resonant effect. This control can add richness and depth to the phasing sound.

Phaser pedals are commonly used in various music genres, including rock, funk, and psychedelic music, to add movement, depth, and texture to guitar tones. They can be used to create swirling, swirling effects on rhythm parts, add dynamics to lead lines, or create atmospheric textures for ambient music. Overall, phaser pedals offer guitarists a versatile tool for shaping their tone and adding expressive modulation effects to their playing.

Synth

A synth pedal transforms your guitar signal into rich, layered tones that mimic the sounds of a synthesiser. Using pitch tracking and waveform generation, it can produce everything from deep bass lines to shimmering pads and futuristic leads. Synth pedals open up a wide creative range, blending the expressiveness of guitar playing with electronic textures, making them ideal for experimental sounds, ambient music, or adding a modern edge to classic riffs.

Tremolo

A tremolo pedal modulates the volume of your guitar signal up and down in a rhythmic pattern, creating a pulsing or wavering effect that can sound vintage and hypnotic or sharp and choppy depending on the settings. It’s one of the oldest effects in guitar history, famously used on classic amps from the 1950s and ’60s.

Most tremolo pedals let you control the speed, depth, and wave shape, allowing you to go from smooth, subtle swells to intense stuttering tones. It’s a simple but expressive effect that adds movement and character to your sound.

used