Pricing and availability
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Average Price: $451
High-end/Boutique
$60
$176+
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Price History
Based on price data from 3 merchants for "Voodoo Lab GCX Guitar Audio Switcher". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Meet the Voodoo Lab GCX Guitar Audio Switcher, a quintessential tool for every guitar enthusiast. Designed to give you unparallel control over your pedals, rack effects, amp channel switching, and more, this switcher is the perfect companion to enhance your musical experience.
Each of the eight loops can be utilized for in/out effect switching, A/B switching for selecting amps and preamps, or to control any type of footswitch function including amp channel switching. The switcher is built with high-grade gold contact relays sealed in pure nitrogen, ensuring no active circuitry that can degrade your signal. This results in an absolutely transparent, inline buffer that reduces noise and loss of high frequencies, improving tone when the effect is not being used.
The Voodoo Lab GCX also provides phantom power to the Ground Control over a standard 5-pin MIDI cable, making it an indispensable part of your musical gear. Whether you are a touring professional, a recording artist, or a passionate hobbyist, the GCX Guitar Audio Switcher is a reliable and efficient solution for all your audio switching needs.
Key Features:
- 8 true bypass audio loops for versatile control
- High-grade gold contact relays sealed in nitrogen for pure signal
- A/B switching for amp and preamps selection
- Control of footswitch functions like amp channel switching
- Provides phantom power to Ground Control via MIDI cable
- Two front-to-back feed throughs with an exceptionally transparent inline buffer
- Can manage small and large setups with ease
- Made in the USA, ensuring superior quality and reliability.
Product specs
| Type | Guitar Audio Switcher |
| Height | 1.75" |
| Width | 19" |
| Depth | 6.5" |
| Weight | 4.65 lbs. |
FAQs
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What is the primary function of the Voodoo Lab GCX Guitar Audio Switcher?
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The Voodoo Lab GCX Guitar Audio Switcher allows you to control up to eight audio loops or devices via MIDI, providing seamless switching and routing for complex guitar rigs.
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Can the Voodoo Lab GCX be used with MIDI controllers?
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Yes, the Voodoo Lab GCX is designed to integrate with MIDI controllers, allowing you to switch loops and devices using MIDI commands.
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How many audio loops does the Voodoo Lab GCX support?
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The Voodoo Lab GCX supports up to eight true bypass audio loops, enabling you to manage multiple effects and devices in your signal chain.
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Is the Voodoo Lab GCX suitable for live performances?
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Yes, the Voodoo Lab GCX is ideal for live performances, offering reliable and flexible control over your effects and devices, ensuring seamless transitions between sounds.
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Does the Voodoo Lab GCX require a specific power supply?
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The Voodoo Lab GCX requires a standard AC power supply, which is typically included with the unit, ensuring it operates effectively in various setups.
Videos
Woodie Larsen
Using Stompboxes With A GCX
Reviews
PROS
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8 independent loops for flexible effect and processor switching
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Allows silent tuning and real-time effect management
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Seamless integration with Ground Control Pro
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Durable, with no jack issues even after repeated use
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Offers true bypass for all pedals, preserving tone
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5-year warranty demonstrates confidence in build quality
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Can chain up to four units for extensive control
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Controls both front-of-amp and effects loop with a single switch
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Solid tech support and helpful setup demonstrations online
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Passive and buffered signal paths cater to different setups
CONS
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Lacks built-in power supply, limiting pedalboard simplification
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Loops not color-coded, complicating troubleshooting
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Documentation could be improved for better user understanding
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Buffered signal may slightly alter gain structure
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Requires many patch cables, increasing setup complexity
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Voodoo Lab GCX Guitar Audio Switcher.
Features and functionality
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The Voodoo Lab GCX can be expanded with stereo cards, transforming 4 channels into stereo at a cost of $125 per card, enhancing stereo setup capabilities.
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It's possible to use standard GCX loops for stereo by programming two loops (for left and right) to work together, accommodating budget constraints without stereo cards.
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It’s possible to control HX Effects presets via MIDI commands from the Ground Control Pro without needing a dedicated GCX loop.
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Use cases and applications
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The GCX is often employed in pairs for complex rigs, allowing for versatile stereo configurations without altering existing pedalboard setups significantly.
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The GCX is utilized by owners for seamless switching between multiple pedals, effects, and amp configurations with a single button press.
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Mods and upgrades
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Owners suggest bypassing non-true bypass pedals, like the Whammy IV, with the GCX to maintain tone integrity, indicating potential tone improvements.
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User experience
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Owners report that GCX units can be found used for around $300, making them a cost-effective long-term investment for reducing pedalboard clutter and improving sound quality.
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Some owners find the combination of GCX and HX Effects redundant unless managing a large number of effects, indicating a preference for simpler setups.
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Value and pricing
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Although initial investment may be high, used GCX systems, combined with a cheaper MIDI foot controller, can be a more affordable way to achieve professional-grade pedal switching.
Source
5.0 out of 5
Based on 3 Reviews and 18 Ratings
330
Incredible control.
I have owned these since back in the days when I used to run a Mesa Triaxis and 2:90 power amp. Each GCX allows you to have up to eight loops, and you can chain up to four GCX units together giving 32 loops!. Probably more than you or I could ever use. Mine has never let me down or failed since the early 90's!
It's possible to set this unit up in so many ways there is little that it can't do!
265
versatile midi control for pedals and software integration
Controls most of the pedals in combo with the Ground Control and sends midi changes to the Voicelive the Behringer delay as well as Ableton.
Artist usage
Add artist
At 3:06 in this video, James Hetfield's rig is shown to consist of a Voodoo Lab GCX Audio Switcher.
One can see two Voodoo Lab GCXs in Billy Corgan's rack, at 1:45 in this rig rundown video.
Mick Thomson uses the Voodoo Lab GCX Guitar Audio Switcher to control his effects loops, as detailed in the Premier Guitar "Slipknot's Mick Thomson & Jim Root Rig Rundown" on YouTube.
In this video, Misha Mansoor was seen using a Voodoo Lab Ground Control Pro with his GCX and G Major.
There is a clear shot of Lee Malia's Voodoo Lab GCX at 14:25 in this rig rundown video.
From the interview with Premier Guitar:
What effects did you use for Blood In, Blood Out? Holt: I use a ton of different pedals. I love stompboxes—they’re like crack to me! I have pedals from Maxon, Dunlop, HomeBrew Electronics, Pigtronix. I use a lot of the Maxon Tube Screamer-type pedals. They made the original ones, so they have ones that are exactly like the original, sought-after ones, and they also have updated versions.
I also love the Boss Octaver. I’ve never been without one my whole life. Dunlop makes a bass octave pedal, which sounds probably even a little better and has a smaller footprint, which I also like. And I use a Voodoo Lab Ground Control. With Slayer, I’ve been using the Dunlop Jerry Cantrell wah. Kerry [King] uses the Zakk Wylde wah, so I wanted something to differentiate our wah sounds.
As of 0:10 in this video, Devin Townsend of Vai, Front Line Assembly, The Wild Hearts, and Strapping Young Lad ,talks about his effect units and other equipment. The GCX is located in the bottom of the rack.
Album Usage
The Voodoo Lab GCX Guitar Audio Switcher has been featured on the following albums:
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use Voodoo Lab GCX Guitar Audio Switcher, it is most commonly used with the following gear.
Community setups
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