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Pedals & Effects

Explore a curated selection of guitar pedals and effects at Gsus4 - from boutique overdrive and distortion to delay, reverb, modulation, pitch, volume and utility pedals. Our range covers everything from classic analogue tones to modern, experimental sound design tools.

Based in Sydney, Gsus4 focuses on thoughtfully selected gear that inspires creativity, whether you are building a compact pedalboard, refining your core tone, or expanding into ambient and textural sounds. Each pedal is chosen for sound quality, build reliability and real-world usability.

Discover gain devices, preamps, buffers, switching solutions and time-based effects from respected global and boutique brands. Whether you play live, record at home, or experiment in the studio, our guitar effects collection is designed to support every stage of your signal chain.

Pedals & Effects - Gsus4
Original price $1,440.00
Original price $1,440.00 - Original price $1,440.00
Original price $1,440.00
Current price $1,138.00
$1,138.00 - $1,138.00
Current price $1,138.00

Empress Effects ZOIA Modular Synth Pedal w/ Reverb, Delay, Chorus, Flanger & more!

Empress Effects

WHAT’S A ZOIA?The ZOIA is basically a modular synthesizer in pedal form. Instead of being a delay effect or tremolo, the ZOIA provides the module...

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Original price $1,440.00
Original price $1,440.00 - Original price $1,440.00
Original price $1,440.00
Current price $1,138.00
$1,138.00 - $1,138.00
Current price $1,138.00
Original price $308.00
Original price $308.00 - Original price $308.00
Original price $308.00
Current price $261.00
$261.00 - $261.00
Current price $261.00

Empress Effects BUFFER Complete Input & Output Interface

Empress Effects

The Empress buffer was designed to be the complete I/O interface for the pedal board, while maintaining the highest fidelity to your guitar's sign...

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Original price $308.00
Original price $308.00 - Original price $308.00
Original price $308.00
Current price $261.00
$261.00 - $261.00
Current price $261.00
Original price $426.00
Original price $426.00 - Original price $426.00
Original price $426.00
Current price $387.00
$387.00 - $387.00
Current price $387.00

Empress Effects BUFFER+ w/ Noise Filter & Boost Complete Input & Output for Pedalboard

Empress Effects

The Empress buffer+ was designed to be the complete I/O interface for the pedal board, while maintaining the highest fidelity to your guitar’s si...

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Original price $426.00
Original price $426.00 - Original price $426.00
Original price $426.00
Current price $387.00
$387.00 - $387.00
Current price $387.00
Sold out
Original price $523.00 - Original price $523.00
Original price $523.00
$523.00
$523.00 - $523.00
Current price $523.00

KarDian Y.O.S Smoggy On Board Overdrive Character Module

KarDiaN

Inheriting the DNA of the Smoggy OverdriveIn 2015, the legendary Smoggy Overdrive pedal was created by Mr. Yoshida of Y.O.S. Guitars. 3 Knobs is th...

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Original price $523.00 - Original price $523.00
Original price $523.00
$523.00
$523.00 - $523.00
Current price $523.00
Original price $327.00 - Original price $327.00
Original price $327.00
$327.00
$327.00 - $327.00
Current price $327.00

KarDiaN Character Module Box Turn Preamp & Overdrive Module into a Pedal Made in Japan

KarDiaN

KarDiaN Character Module Box is specifically made for KarDiaN's Characterr Modules.  The housing is made out of Aluminum and can hold any character...

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Original price $327.00 - Original price $327.00
Original price $327.00
$327.00
$327.00 - $327.00
Current price $327.00
Original price $392.00 - Original price $392.00
Original price $392.00
$392.00
$392.00 - $392.00
Current price $392.00

KarDian IRODORI On Board Preamp Boost Character Module

KarDiaN

Beeline Treatment by irodori onboard"irodori" was born in 2017 by Mr. Imanishi of Limetone Audio. It was the winner of that year's effects contest...

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Original price $392.00 - Original price $392.00
Original price $392.00
$392.00
$392.00 - $392.00
Current price $392.00
Original price $327.00 - Original price $327.00
Original price $327.00
$327.00
$327.00 - $327.00
Current price $327.00

KarDian IODOFORM "SILVER" On Board Overdrive Character Module

KarDiaN

"Iodoform" is not an onboard preamp. Rather than amplifying and flavouring the sound as a preamp, Iodoform was developed from the perspective of ac...

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Original price $327.00 - Original price $327.00
Original price $327.00
$327.00
$327.00 - $327.00
Current price $327.00
Original price $588.00 - Original price $588.00
Original price $588.00
$588.00
$588.00 - $588.00
Current price $588.00

KarDian KND-LOW for BASS Volume Pedal w/ AMTRANS Conmponents & Curve Control For Bass

KarDiaN

The KarDian KND-LOW is a modded version of the Ernie Ball VP Junior. The KND-LOW for BASS was born out of a desire to make the volume pedal not jus...

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Original price $588.00 - Original price $588.00
Original price $588.00
$588.00
$588.00 - $588.00
Current price $588.00
Original price $588.00 - Original price $588.00
Original price $588.00
$588.00
$588.00 - $588.00
Current price $588.00

KarDian KND-LOW Volume Pedal w/ AMTRANS Conmponents & Curve Control For Guitars

KarDiaN

The KND-LOW was born out of a desire to make the volume pedal not just a device that changes the volume, but a product that creates new music by us...

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Original price $588.00 - Original price $588.00
Original price $588.00
$588.00
$588.00 - $588.00
Current price $588.00
Original price $654.00 - Original price $654.00
Original price $654.00
$654.00
$654.00 - $654.00
Current price $654.00

KarDiaN Chloroform CHCL3 Transparent Overdrive Made in Japan

KarDiaN

The world of vividly colEored glasswork. It's a symphony of craftsmanship, from the raw materials to the crafting techniques. One of the p...

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Original price $654.00 - Original price $654.00
Original price $654.00
$654.00
$654.00 - $654.00
Current price $654.00
Original price $654.00 - Original price $654.00
Original price $654.00
$654.00
$654.00 - $654.00
Current price $654.00

KarDiaN Vitamin C C6H8O6 Fuzz Distortion Based on Big Muff Made in Japan

KarDiaN

The Big Muff is one of the most popular fuzz pedals in the world. The vintage Big Muff pedal has a fascinating sound that has captured th...

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Original price $654.00 - Original price $654.00
Original price $654.00
$654.00
$654.00 - $654.00
Current price $654.00
Original price $654.00 - Original price $654.00
Original price $654.00
$654.00
$654.00 - $654.00
Current price $654.00

KarDiaN Nitroglycerin C3H5N3O9 Overdrive Distortion Made in Japan

KarDiaN

There are a lot of pedal-type overdrives out there, but most of them don't have the grainy, biting compression of a tube amp distortion, a...

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Original price $654.00 - Original price $654.00
Original price $654.00
$654.00
$654.00 - $654.00
Current price $654.00
Original price $719.00 - Original price $719.00
Original price $719.00
$719.00
$719.00 - $719.00
Current price $719.00

KarDiaN Serotonin 5th Limited Edition C10H12N2O Overdrive & Boost based on TS5 Made in Japan

KarDiaN

KarDiaN, a pedal brand born in 2017, is now celebrating its 5th anniversary. This year, we will produce a pedal named after the number "5," whic...

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Original price $719.00 - Original price $719.00
Original price $719.00
$719.00
$719.00 - $719.00
Current price $719.00
Original price $654.00 - Original price $654.00
Original price $654.00
$654.00
$654.00 - $654.00
Current price $654.00

KarDiaN Serotonin C10H12N2O Overdrive & Boost Based on Tube Screamer Made in Japan

KarDiaN

"The C10H12N2O / Serotonin was developed to provide the rich midrange and smooth picking response of the Tube Screamer. The "C10H12N2O / Seroto...

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Original price $654.00 - Original price $654.00
Original price $654.00
$654.00
$654.00 - $654.00
Current price $654.00
Original price $523.00
Original price $523.00 - Original price $523.00
Original price $523.00
Current price $431.00
$431.00 - $431.00
Current price $431.00

Mad Professor MIGHTY RED Distortion PCB

Mad Professor

Premium quality distortion pedal "All in all, the Mighty Red Distortion might be offering a very signature sound, but it can also deliver tons mo...

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Original price $523.00
Original price $523.00 - Original price $523.00
Original price $523.00
Current price $431.00
$431.00 - $431.00
Current price $431.00
Original price $261.00
Original price $261.00 - Original price $261.00
Original price $261.00
Current price $235.00
$235.00 - $235.00
Current price $235.00

Red Witch IVY Distortion Seven Sisters High Gain w/ Built-in Li-Ion Battery

Red Witch

Sister midnight, the wild child…. the sister you covet.....  A high gain Metal priestess of the first order. The black sheep of the family, rumou...

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Original price $261.00
Original price $261.00 - Original price $261.00
Original price $261.00
Current price $235.00
$235.00 - $235.00
Current price $235.00
Sold out
Original price $261.00 - Original price $261.00
Original price $261.00
$261.00
$261.00 - $261.00
Current price $261.00

Red Witch LILY Boost Seven Sisters Transparent Boost w/ Built-in Li-Ion Battery

Red Witch

Lily is simply the boost to end all boosts. A truly transparent tone retaining desert island clean pedal The pure sister – offering a gorgeous cle...

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Original price $261.00 - Original price $261.00
Original price $261.00
$261.00
$261.00 - $261.00
Current price $261.00
Original price $523.00
Original price $523.00 - Original price $523.00
Original price $523.00
Current price $458.00
$458.00 - $458.00
Current price $458.00

One Control BJFe Honey Bee OD 4K Mini Custom Limited Edition OC-HBOD4K-M-C

One Control

For the 20th anniversary of the original BJFe Honeybee Overdrive, Björn Juhl has now brought the sound of his classic low-gain overdrive to the One...

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Original price $523.00
Original price $523.00 - Original price $523.00
Original price $523.00
Current price $458.00
$458.00 - $458.00
Current price $458.00
Sold out
Original price $850.00
Original price $850.00 - Original price $850.00
Original price $850.00
Current price $785.00
$785.00 - $785.00
Current price $785.00

Lehle Parallel SW II Mono and Stereo Parallel Switcher and Line Mixer

Lehle

Lehle Parallel SW II is a compact and versatile line mixer designed to meet the highest tonal standards. The LEHLE PARAL...

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Original price $850.00
Original price $850.00 - Original price $850.00
Original price $850.00
Current price $785.00
$785.00 - $785.00
Current price $785.00
Original price $523.00
Original price $523.00 - Original price $523.00
Original price $523.00
Current price $471.00
$471.00 - $471.00
Current price $471.00

Lehle Sunday Driver SW II Preamp and Buffer for Electric and Acoustic Instruments

Lehle

The LEHLE SUNDAY DRIVER SW II  is a compact high-end preamp for all types of electric and acoustic instruments – a preamp for ele...

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Original price $523.00
Original price $523.00 - Original price $523.00
Original price $523.00
Current price $471.00
$471.00 - $471.00
Current price $471.00
Original price $523.00
Original price $523.00 - Original price $523.00
Original price $523.00
Current price $431.00
$431.00 - $431.00
Current price $431.00

Lehle P-Split III Transformer Isolated Passive Output Splitter (1x Input & 2x Output)

Lehle

The LEHLE P-SPLIT III combines passive splitting with the highest possible signal fidelity.Its applications range from splitting signals and elimi...

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Original price $523.00
Original price $523.00 - Original price $523.00
Original price $523.00
Current price $431.00
$431.00 - $431.00
Current price $431.00
Original price $452.00
Original price $452.00 - Original price $452.00
Original price $452.00
Current price $392.00
$392.00 - $392.00
Current price $392.00

Lehle Little Lehle III Bypass Looper Switcher Mono and Stereo Functionality

Lehle

The LITTLE LEHLE III - The universal Lehle switching and looping tool.The LITTLE LEHLE III allows you to remove effects pedals from your signal p...

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Original price $452.00
Original price $452.00 - Original price $452.00
Original price $452.00
Current price $392.00
$392.00 - $392.00
Current price $392.00
Original price $719.00 - Original price $719.00
Original price $719.00
$719.00
$719.00 - $719.00
Current price $719.00

Kernom RIDGE Augmented Analog Overdrive Pedal The Ultimate Overdrive Modeller

Kernom

The Kernom Ridge is the word's first augmented overdrive, boasting an unlimited number of 100% pure analogue clipping options in one circuit. Buil...

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Original price $719.00 - Original price $719.00
Original price $719.00
$719.00
$719.00 - $719.00
Current price $719.00
Original price $1,440.00
Original price $1,440.00 - Original price $1,440.00
Original price $1,440.00
Current price $981.00
$981.00 - $981.00
Current price $981.00

Blackstar AMPED 1 DEPT 10 100 Watt Amp Pedal

Blackstar

AMPED 1 is a professional 100 Watt guitar amp in a compact pedal. It turns any pedalboard, modeller, or multi-effector into a performance ready am...

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Original price $1,440.00
Original price $1,440.00 - Original price $1,440.00
Original price $1,440.00
Current price $981.00
$981.00 - $981.00
Current price $981.00