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Walrus Audio Slöer Stereo Ambient Reverb Pedal in Blue

An expanded version of the best-selling Slö pedal — featuring 2 extra reverb modes, 2 additional wave shapes, a sample rate knob & a stereo width control!



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SKU: 64422

Product Description

The Slöer Stereo Ambient Reverb pedal builds on Walrus Audio's popular Slö lineup but adds two more reverb algorithms, a stereo width control, two additional modulation wave shapes, and the ability to control the sample rate. Now, you can create immersive, lush, modulated, sleepy, and ambient soundscapes with more width and depth than ever before!

Key Features

  • 5 reverb modes: Dark, Rise, Dream, Rain and Light.
  • 5 modulation wave shapes: Sine, Warp, Sink, Square and Random.
  • 3 onboard presets for saving and recalling your favourite settings.
  • Decay, Filter, Depth, Mix, Width, X, Stretch and Mode controls.
  • X fader controls various parameters for different programs including octave level, swell time, vibrato depth, delay tap diffusion and shimmer intensity.
  • Stereo width switch for creating wide and spacious soundscapes, with Wide, Medium and Narrow settings.
  • Sustain switch ramps up the reverb trail to maximum, and allows you to capture and sustain the current reverb decay for long pad-like sounds (Dream mode).
  • Choose between trails mode for natural decay, or no trails mode for an abrupt cut-off.
  • Preset spillover maintains the reverb trails between same-algorithm presets.
  • Hand-built in Oklahoma, USA.

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5 Reverb Modes

  • Dark: Add a lower octave to your reverb trail. Here, you'll create deep and wide atmospheric sounds and channel nightmarish soundscapes. X knob sets the level of a -1 octave signal that feeds the reverb.
  • Rise: This is an auto-swell reverb for beautiful cinematic swells. Don't rush it. Let it breathe and gently wake up. X knob sets the amount of time it takes the reverb to swell in after a note is played. Set lower for shorter rise times and higher for longer rise times.
  • Dream: Lush reverb with a latching pad function. Press the sustain switch to latch signal. Experiment with the X knob to add vibrato over the pad. Press sustain again and the pad will decrescendo according to where the decay knob is set. X knob sets the depth of vibrato applied to the reverb trail.
  • Rain: Tappy and trippy, this program creates a unique effect with lower levels of diffusion allowing the reverb delay taps to audibly create an echo-like effect within your reverb. Use the X control to set the amount of diffusion of the delay taps.
  • Light: Bright and smooth reverb with an octave-up shimmer. Create a range of ethereal sounds with the X slider, keep it low for a smooth pad-like reverb, or push it higher for a bright shimmer effect.

5 Wave Shapes

The Slöer also features five different wave shapes, accessible by holding down bypass while switching the algorithm dial:

  • Sine: Smooth and even pitch up and down modulation.
  • Warp: Asymmetric pitch up modulation similar to a warped record.
  • Sink: Asymmetric pitch down modulation for sinking detune (similar to a Bigsby).
  • Square: Symmetric pitch up and down modulation for stepped modulation.
  • Random: Uses sample and hold that picks new random values.


  • Dimensions: 12.2 x 6.6 x 3.5 cm
  • Power Requirements: 9V DC, 100 mA
Elliot Stent author picture

Written by Elliot Stent

Customer Reviews


1 review





Mr Allan Bertram14th Jan 2024

Not yet unlocked full potential

Value 3Looks 4Durability 4Sound 4

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