Scan code: LN107708 Manufacturer code: KE-SEA2

Keeley Seafoam Plus Chorus Effects Pedal

Keeley Seafoam Plus Chorus, Chorus/Vibrato/Flanger/Reverb Pedal for Guitar and Bass

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Scan code: LN107708 Manufacturer code: KE-SEA2
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True Chorus and ADT with Reverb
Keeley - 'Seafoam Plus Chorus'

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Pedal for Guitar and Bass
The guys at Keeley Electronics have done it again, redefining what it is an effects pedal can do, or is ‘supposed’ to do. Keeley have redefined the chorus effect. This is a new style of Chorus which, in the words of Keeley themselves, just ‘sounds right’.

Keeley’s ‘Seafoam Plus Chorus’, is a ‘true’ chorus and ADT with Reverb. It promises to forever alter the way you think about chorus. Why? Because until now this type of chorus was only available as part of an expensive DAW setup or in top-end studios. Whilst the Seafoam has been optimally tuned for guitar, there’s also certain voices and modes which have been specifically created for bass guitar.

Finally, the Seafoam has internal switching to allow for both vintage and modern tones, which serves to only enhance the versatility in this magnificent chorus effect.

at a glance • Chorus/flanger/tremolo/vibrato/reverb pedal optimised for guitar and bass
• Built-in switches to toggle Guitar/Bass and Modern/Vintage modes
• Reverb on hand in Dimension mode (via Space knob) for adding sweet ambience
• Seafoam mode features vintage bucket brigade-style chorus with an adjustable Tone control
• Dual Chorus mode allows you to affect just your highs or lows for sonic creativity

A New Style of Chorus


a 'true' chorusIn Keeley’s ‘Seafoam Plus Chorus’, is the automatic doubler which was developed in their ground breaking 30ms Double Tracker. The ADT chorus is what Keeley likes to call ‘True Chorus’, because it creates a 2nd and 3rd voice, similar to a choir effect. Not only singing at differing times, but differing pitches.

Seafoam Mode: This mode offers exquisite sonic detail and the tone of a retro BBD analogue chorus unit. This is where you’ll find a regular chorus feature, the LFO. It delivers a classic tone that you’d be right to expect and which has become an iconic sound. Set a slow rate, a wide depth and bask is vast and spacious sounding chorus. Turn the mix all the way up for a vibrato effect. As the space control acts as a tone control here, you can go from super bright, to rich warm tones.

Dual Chorus Mode: Keeley created a frequency crossover-based dual-chorus engine. Imagine a dividing line, centered on the high E string. Take full control of the depth of chorus independently. Create the ultimate “Come As You Are” Nirvana of chorus tones. Craft a deep, pulsing chorus on the low end, and a near perfect calm on the top end. Or make the high-end and shimmer and waver while keeping the low end fixed!

Navigating & Controlling the 'Seafom Plus'

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Keeley electronics
Seafoam Plus
Keeley's impressive 'Seafoam Plus' is a huegly versatile machine, so versatile infact, we're surprised they managed to fit so many tricks into such a small box! Fear not though, as ever, Keeley have laid out the Seafoam Plus with an easy to get to grips with control configuration. Check it out further below!


RateADT MODE: Controls tuning of double tracked voices upto 21 cents.
Seafoam and Dual Chorus Mode: Controls rate of chorus: 0.1-7Hz.


SpaceADT Mode: Controls Abbey Chamber Verb
Seafoam Mode: Tone Control
Dual Chorus Mode: Controls Depth of Low Band Chorus.


Mode selectSelect either ADT Mode, Seafoam Mode, Dual Chorus Mode.


ADT Mode: Controls delay time of doubled voice upto 21ms.
Seafoam Mode: Controls Depth
Dual Chorus Mode: Controls Dpeth of High Band Chorus.


MixControls mix of dry and wet signal in all modes. Central position is an equal blend of wet and dry. Go more dry for more original signal, wetter for more vibrato and less dry signal.

The Tech Spec

Features Specification
Pedal Type Chorus/Vibrato with Reverb
Analogue/Digital Digital
Inputs 1 x 1/4"
Outputs 1 x 1/4"
Power Source 9V DC power supply required (sold separately)
Power Usage 65mA
Batteries Optional 9V battery
Height 2" (including knobs)
Width 2.67"
Voltage 9 Volts
Current 65 mA
Battery Compartment No
Output Channels Mono
Dimensions 68 x 51 x 112 mm (W x H x L)
Passive Pedal No
Additional Information
Scan Code LN107708
Model Number KE-SEA2
GTIN 854295005482

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For further information regarding Scan's warranty procedure please see our terms and conditions

12 months
Return to base
DOA Period:
28 days
RTB Period:
12 months
Manufacturer Contact Details
Scan Computers International Limited
Keeley Seafoam Plus Chorus Effects Pedal
Keeley Seafoam Plus Chorus Effects Pedal