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If one Ground Control makes a difference, six connections can transform a system. The GC3.1 is the larger sibling of the GC1.1, with six 4mm banana sockets, enough to ground a whole system from one box.
Like all CAD Ground Controls, it is a passive unit built around proprietary materials that convert high frequency noise into heat, from about 1MHz up into the GHz range. The six connections let you ground several components at once, or create a common "star" earth connection. CAD finds the GC3.1 works especially well connected to mains earth and directly to the cases of amplifiers.
The GC3.1 improves on the original GC3 with new internal materials that work across a broader frequency range and attenuate more noise. Connection cables are sold separately (see Ground Control Cables).
Key Features
• Passive, with no power required
• Six 4mm banana sockets
• Absorbs noise on signal ground and mains earth
• Suits star-earth connection of multiple components
• Connects to any spare RCA, XLR, USB, BNC, RJ45 or spade connection
Technical Specifications
• Connections: 6 x 4mm banana sockets
• Noise reduction range: approx. 1MHz to GHz
• Dimensions: 356 (L) x 458 (W) x 89 (H) mm
• Weight: 16kg
• Power: none required (passive)
Our enduring presence in the audio industry since 1990 speaks volumes about the trust we've earned from our customers. We're more than a business; we're a legacy built on audio excellence and unwavering customer satisfaction. With us, you're not just buying a product, you're joining a community built on trust, quality, and a shared love for sound.
Our services hit the high notes, but don't just take our word for it. Scroll down to read the rave reviews from our chorus of happy customers. They've heard the difference, and you can too. Read Reviews
Collections: CAD, Noise Isolation/Reduction
Type: mains power filter
Immerse yourself in the enchanting world of music with the CAD - Ground Control GC3.1– High-Frequency Mains Power Filter. This isn't just a device; it's an experience, a bridge to musical memories and new adventures. With its sleek design and unparalleled sound quality, it transcends being a mere piece of equipment. It's a statement, a lifestyle, a celebration of sound. Why hold back? Embrace the rhythm, live the melody!
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Shoutout to #TheRealMusicCompany for their amazing customer service. They helped me find the perfect headphones, and I couldn't be happier with my purchase. #CustomerServiceWin
For over 30 years, we've been the heartbeat of New Zealand's Hi-Fi scene. Our pride lies not just in the products we offer, but in the exceptional customer service that forms the heartbeat of our operations. We don't just sell equipment; we share in your love for sound. No matter what you're seeking, we're here to guide, assist, and ensure your journey into the world of superior sound is nothing short of extraordinary. With us, you're not just a customer, you're part of our vibrant, music-loving family.
That goosebumps-inducing moment when the first note hits, that's what we live for. We love seeing our customers' eyes light up as they experience the breathtaking sound quality of their new audio system. It's not just good; it's jaw-droppingly good. It's the kind of sound that makes your heart skip a beat and leaves you craving for more.
In a world of automated responses and impersonal interactions, we take pride in offering good old-fashioned customer service. We're here to guide you, help you, and ensure your journey into the world of high-quality sound is smooth and enjoyable. Feel the difference of personalised service that's as impressive as the sound quality of our CAD systems.
Our commitment to delivering top-tier audio experiences has earned us glowing reviews from customers and industry experts alike. Our passion for sound, dedication to quality, and exceptional customer service have made us a favourite in the audio community. But don't just take our word for it - see what our satisfied customers have to say!










Have a question about the CAD - Ground Control GC3.1– High-Frequency Mains Power Filter or other CAD products Contact your local store below