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.

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A3 Stompbox | Quad Cortex Duel Expression Pedal | Expression w/ Toe Switch (A3 - CortEXP) - Gsus4

$489.00

$489.00 - $489.00

$489.00

$449.00

$449.00 - $449.00

$449.00

A3 Stompbox | Quad Cortex Dual Expression Pedal | Expression w/ Toe Switch | Mini

A3 Stompbox

The Ultimate DUAL EXPRESSION For Your Modellers Like Quad Cortex, Helix & Kemper Expression Output 1: Smooth Throw Expression Pedal The ...

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$489.00

$489.00 - $489.00

$489.00

$449.00

$449.00 - $449.00

$449.00

$489.00

$489.00 - $489.00

$489.00

$449.00

$449.00 - $449.00

$449.00

A3 Stompbox | Quad Cortex Dual Expression Pedal | Expression w/ Toe Switch | Standard

A3 Stompbox

The Ultimate DUAL EXPRESSION For Your Modellers Like Quad Cortex, Helix & Kemper Expression Output 1: Smooth Throw Expression Pedal The ...

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$489.00

$489.00 - $489.00

$489.00

$449.00

$449.00 - $449.00

$449.00

1981 Inventions | LVL | Full Range Low - Gain Overdrive | Black (1981 - LVL - BLK) - Gsus4

$379.00 - $379.00

$379.00

$379.00 - $379.00

$379.00

1981 Inventions | LVL | Full Range Low-Gain Overdrive | Black

1981 Inventions

LEVEL IS IMPORTANT This is a new circuit entirely! It’s my second official release, after the DRV. LVL is a professional low-gain device, which...

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$379.00 - $379.00

$379.00

$379.00 - $379.00

$379.00

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A3 Stompbox | J | Preamp & Tone Shaper (A3 - J) - Gsus4

$489.00

$489.00 - $489.00

$489.00

$419.00

$419.00 - $419.00

$419.00

A3 Stompbox | J | Preamp & Tone Shaper

A3 Stompbox

Introducing the A3 Stompbox J Preamp, an exceptional pedal meticulously crafted to enrich the tonal qualities of your guitar with a delightful vi...

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$489.00

$489.00 - $489.00

$489.00

$419.00

$419.00 - $419.00

$419.00

1981 Inventions | DRV | Preamp / Distortion | White Sparkle (1981 - DRV - White) - Gsus4

$409.00 - $409.00

$409.00

$409.00 - $409.00

$409.00

1981 Inventions | DRV | Preamp / Distortion | White Sparkle

1981 Inventions

A highly nuanced preamp/distortion pedal designed in collaboration with Jon Ashley of Bondi Effects. Through four years of abandoned prototypes ...

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$409.00 - $409.00

$409.00

$409.00 - $409.00

$409.00

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1981 Inventions | DRV | Preamp / Distortion | Red Sparkle (1981 - DRV - RED) - Gsus4

$409.00 - $409.00

$409.00

$409.00 - $409.00

$409.00

1981 Inventions | DRV | Preamp / Distortion | Red Sparkle

1981 Inventions

A highly nuanced preamp/distortion pedal designed in collaboration with Jon Ashley of Bondi Effects. Through four years of abandoned prototypes ...

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$409.00 - $409.00

$409.00

$409.00 - $409.00

$409.00

Sold out

A3 Stompbox | The Custom Expression Pedal | Stainless | Mini (A3 - EXP - Mini - silver) - Gsus4

$489.00

$489.00 - $489.00

$489.00

$399.00

$399.00 - $399.00

$399.00

A3 Stompbox | The Custom Expression Pedal | Stainless | Mini

A3 Stompbox

"The best volume pedal ever with the perfect throw and curve."- Michael Thompson"This is great."- Melvin Davis"So smooth"- Nigel Hendroff"FI...

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$489.00

$489.00 - $489.00

$489.00

$399.00

$399.00 - $399.00

$399.00

A3 Stompbox | The Custom Volume & Expression Pedal | w/ Built - in TC Polytune & Bonafide Buffer | Mini (A3 - VP/EXP - Tuner - Buffer) - Gsus4

$599.00 - $599.00

$599.00

$599.00 - $599.00

$599.00

A3 Stompbox | The Custom Volume & Expression Pedal | w/ Built-in TC Polytune & Bonafide Buffer | Mini

A3 Stompbox

This is a Custom Unit Made for Gsus4 by A3 Stompbox. Features, 1x Input Jack (TS) // 1x Output Jack (TS) for Volume Control 1x Output Jack (TRS) fo...

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$599.00 - $599.00

$599.00

$599.00 - $599.00

$599.00