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Fairfield Circuitry Shallow Water K-Field Modulator Pedal



Order now for delivery to you on Wed 18th May 2022.

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    Product Description

    Re-animate your guitar parts, hypnotize your synths into a dreamy trance, submerge your loops in a swirling pool of syrupy sound! Fairfield Circuity's latest demented venture will send you and your musical ideas spiralling into another plane of existence.

    Based on a traditional analogue chorus/vibrato circuit, the Shallow Water varies the delay and filtration created in relation to the input signal, simultaneously giving an old-tape-like warmth and sporadic flutters of pitch and modulation.

    Your ideas will take on a lifeforce of their own. Relieve yourself of the control over your sound and let it wade through the Shallow Water's murky, ethereal circuitry!

    Here's what Fairfield Circuitry say about the Shallow Water:

    Practically, this describes an effect built around your typical analogue chorus/vibrato circuit wherein the signal is delayed by a few dozen milliseconds using a bucket brigade device. Another signal then modulates this delay time to create changes in pitch, called vibrato. Chorus is achieved by mixing the original signal with the delayed signal, creating the moving comb filters that tickle our ears and feather our bangs. Still, major differences can be noticed when studying the k-field modulator’s architecture. The most striking are how the delay time is modulated in a random fashion and how the recovery filter moves in relation to the input signal. Both these differences place Shallow Water in a category of its own, appropriately called k-field modulators. As the present gets lost, the future becomes the past.

    Pseudo Random Generator

    The random quality of the modulation begins in a simple program residing on a microcontroller. Its output resembles steps of random voltages, seperated by random time intervals. The RATE control effectively sets the overall range of these time intervals.

    Integrator and Depth

    These random stepped voltages are processed through a filter/ integrator, giving control over the slope at which the steps will reach their new values. As DAMP is increased, the random steps become slow and sluggish, instead of sharp and abrubt. DEPTH defines the amount of modulation that will be used to modulate the time delay of our input signal. There is a strong interaction between all three controls affecting modulation; that is rate, damp and depth. 

    Envelope Follower and Recovery Filter

    Once the input signal has passed through the delay line, a recovery filter and some kind of gate is necessary to remove unwanted noise generated by the bucket brigade device. To achieve this, the input’s envelope is followed and used to modulate the frequency of a low pass filter. The amount of envelope is set by the LPG control, yielding bouncy, lo-fi responses to quick and snappy gate-like behaviours.



    • true bypass 
    • input impedance 1M
    • output impedance 2k
    • power supply 9 to 9.6 VDC
    • current draw 40 mA max. P


    • 1/4” mono input/output jacks
    • 2.1mm DC connector
    • 4.7” x 3.8” enclosure dimensions
    Sam Beattie author picture

    Written by Sam Beattie

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    Customer Reviews


    17 reviews





    Trusted Customer25th Mar 2022

    Value 2Looks 5Durability 4Sound 5

    Trusted Customer10th Jan 2022

    Value 5Looks 5Durability 5Sound 5

    Mr Ian Blackwood26th Nov 2021

    Interesting guitar pedal. The low pass gate is quite unique. For my personal taste, I tend to use it subtly for 'warming up' my tone.

    Value 5Looks 5Durability 4Sound 5

    Joe Kingman23rd Aug 2021

    Value 4Looks 5Sound 5

    Mr James Wallace1st May 2021

    Value 5Looks 5Durability 5Sound 5

    Mr Edward Abelson27th Feb 2021

    Value 4Durability 4Sound 5

    Trusted Customer22nd Feb 2021

    Fairfield Circuitry Shallow Water. Such a fantastic pedal. Quirky, subtle and incredibly musical when dialled in just right. Highly recommend if you're after a bit of old school wobble

    Value 5Looks 5Durability 5Sound 5

    Mr Brandon Gee7th Feb 2021

    Sounds brilliant! Does the lo-fi knackered tape effect very well. It is a constant source of inspiration and overall adds that little extra something to my tone

    Value 5Looks 5Durability 5Sound 5

    Mr. Rohan Leach4th Feb 2021

    A rare pedal. It's just different to everything else. Very useable. It's like a Chorus, Flanger and Phaser ... yet none of those things.

    Value 4Looks 4Durability 5Sound 5

    Mr Andrew White3rd Oct 2020

    I‘ve been after a chorus pedal for some time but I’ve never found one that did what this one does. It can be used as a chorus/vibrato pedal, but it also adds texture and grit to your guitar tone; like an old tape machine. Adding an octave pedal and reverb creates 80s synth sounds. Used with fuzz or heavy distortion the Shallow Waters thickens up the guitar tone and adds real heft to your sound. It’s a bit expensive, but if I could only use one pedal it’s the one I’d choose over any other.

    Value 4Looks 5Durability 5Sound 5

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