Fuses

13A plug fuses and equipment fuses from HiFi Tuning, QSA and Synergistic Research, in the ratings and sizes hi-fi equipment actually uses.

43 products Award Winning Dealer Since 2013 Free expert consultation

An honest word on hi-fi fuses

Fuses are the most contested product category we sell. A fuse is a safety device, its job is to fail, and the argument that the material and construction of a few millimetres of wire affects the sound of a system is one many people reject on principle. We understand why.

What we can tell you is what we hear and what our customers report. A number of listeners describe a lower noise floor and better resolution after changing a mains fuse, and repeat purchasing in this category is high. Others try one and hear nothing at all. We would not put a fuse near the top of an upgrade list ahead of cables, isolation or a decent mains block, and we will say so if you ask.

Two rules apply regardless of where you stand on the question. Never fit a higher rating than the equipment specifies, because the fuse is there to protect you and the equipment. And check the physical size, since 20mm and 32mm equipment fuses are not interchangeable. If you want to try one, start with a single fuse rather than changing several at once, so you can hear what each change does.

4.95/5 from 20,703+ reviews Award Winning Dealer Since 2013 UK Specialist since 2005

36 of 43 products

  • £6,666.67
    Ex. VAT
    Future Shop is thrilled to unveil Quantum Science Audio (QSA), renowned for its expertise in the audiophile fuse domain. With over 22 years of delving into 'Bottle Neck Distortion', QSA fuses offer remarkable system enhancements previously underestimated in the industry. These fuses focus on mitigating 'bottlenecking', thereby maximising system efficiency. Our own tests, supported by external feedback, confirm that QSA fuses across the range significantly elevate audio systems. The GOLD Extreme fuse is QSA's ultimate offering, engineered for top-tier audiophile systems, aiming to provide unparalleled audio refinement and acoustic purity with its advanced design and material treatments.
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  • Synergistic Research Blue High-End Fast-Blow Fuse
    SALE

    Synergistic Research

    Synergistic Research Blue High-End Fast-Blow Fuse - Special Offer - Black November Deal

    SKU: SR Blue Fast-Blow

    (3 reviews)
    From
    £74.96 £108.33
    Ex. VAT ✓ Save £33.38

    The revolutionary new SR BLUE Quantum Fuse was developed over a two year period and represents Synergistic Research's most advanced UEF Technology to date. At its heart is a completely new UEF / Graphene coating that delivers a dramatic increase in resolution and holographic realism over SR Black. And thanks to a new conditioning process, break-in time is cut in half.

     

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  • Synergistic Research Blue High-End Slow-Blow Fuse
    SALE

    Synergistic Research

    Synergistic Research Blue High-End Slow-Blow Fuse - Special Offer - Black November Deal

    SKU: SR Blue Slow-Blow

    (4 reviews)
    From
    £74.96 £108.33
    Ex. VAT ✓ Save £33.38

    The revolutionary new SR BLUE Quantum Fuse was developed over a two year period and represents Synergistic Research's most advanced UEF Technology to date. At its heart is a completely new UEF / Graphene coating that delivers a dramatic increase in resolution and holographic realism over SR Black. And thanks to a new conditioning process, break-in time is cut in half.

     

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  • Synergistic Research

    Synergistic Research Master High-End UK 13A Fuse

    SKU: SR Master UK 13A Fuse

    (5 reviews)
    £470.83
    Ex. VAT
    The Synergistic Research Master Fuse is first Synergistic Research fuse developed expressly for full resolution, dynamics, soundstaging, speed, and impact without the need to create musicality as a system-wide fuse loom

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  • Synergistic Research Orange High-End Fast-Blow Fuse
    SALE

    Synergistic Research

    Synergistic Research Orange High-End Fast-Blow Fuse - Special Offer - Black November Deal

    SKU: SR Orange Fast Blow

    From
    £91.62 £129.17
    Ex. VAT ✓ Save £37.54

    The new ORANGE Quantum Fuse is a direct result of technology Synergistic Research first developed for their Limited Edition Galileo SX PowerCell. At its core are new UEF Technologies and a completely new multi-stage high voltage treatment process for the lowest noise floor of any fuse they have ever manufactured.

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  • Synergistic Research Orange High-End Slow-Blow Fuse
    SALE

    Synergistic Research

    Synergistic Research Orange High-End Slow-Blow Fuse - Special Offer - Black November Deal

    SKU: SR Orange Slow Blow

    (7 reviews)
    From
    £91.62 £129.17
    Ex. VAT ✓ Save £37.54

    The new ORANGE Quantum Fuse is a direct result of technology Synergistic Research first developed for their Limited Edition Galileo SX PowerCell. At its core are new UEF Technologies and a completely new multi-stage high voltage treatment process for the lowest noise floor of any fuse they have ever manufactured.

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  • Synergistic Research

    Synergistic Research Master High-End Slow-Blow Fuse

    SKU: SR Master Slow-Blow Fuse

    (2 reviews)
    £470.83
    Ex. VAT
    The Synergistic Research Master Fuse is first Synergistic Research fuse developed expressly for full resolution, dynamics, soundstaging, speed, and impact without the need to create musicality as a system-wide fuse loom

    View Available Worldwide Shipping Available
  • Synergistic Research Orange High-End Slow-Blow Fuse
    SALE

    Synergistic Research

    Synergistic Research Purple High-End Slow-Blow Fuse - Special Offer - Black November Deal

    SKU: SR Purple Slow Blow

    (7 reviews)
    From
    £112.46 £158.33
    Ex. VAT ✓ Save £45.88

    The brand new Purple Fuse is Synergistic Research's latest flagship fuse, surpassing the performance of the remarkable Orange fuses thanks to a new, three-stage conditioning process and a new premium graphene UEF compound to reduce the noise floor further than has ever been possible for Synergistic Research fuses. Slow-blow fuses are most commonly found in high-powered electrical equipment. They are more tolerant to high current passing through, meaning the fuse will withstand sudden high current flowing through the unit. Slow-blow fuses should be used where the equipment utilises large amounts of power, especially when switched on, like power amplifiers, integrated amplifiers or headphone amps. When installing your new fuse, please ensure you test the fuse in both directions as they are directional from left to right. When the fuse is inserted in the correct direction it will sound more detailed.

    Please note: some configurations will be special-order.

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  • Synergistic Research

    Synergistic Research Master High-End Fast-Blow Fuse

    SKU: SR Master Fast-Blow Fuse

    £470.83
    Ex. VAT
    The Synergistic Research Master Fuse is first Synergistic Research fuse developed expressly for full resolution, dynamics, soundstaging, speed, and impact without the need to create musicality as a system-wide fuse loom

    View Available Worldwide Shipping Available
  • HiFi TUNiNG

    HiFi TUNiNG UK-Supreme 3 Diamond Mains Fuse - 13A

    SKU: UK-Supreme 3 Diamond

    (4 reviews)
    £145.83
    Ex. VAT

    In a world with increasingly more expensive equipment, many seemingly minor components used are of a lower quality, e.g. fuses. By replacing off-the-shelf fuses supplied with most equipment, anyone can improve their system's signal path. This belief allowed Hi-Fi TUNiNG to create an effective range of fuses that can benefit everyone.

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  • Synergistic Research

    Synergistic Research Pink High-End Fast-Blow Fuse

    SKU: SR Pink Fast-Blow Fuse

    £208.29
    Ex. VAT

    Investing in the Synergistic Research Pink High-End Fast-Blow Fuse promises to revolutionise your audio experience with its cutting-edge technology and years of research behind it, delivering unparalleled performance and elevating your system's sound quality to new heights. With its unique combination of the latest UEF compound and high voltage conditioning process, originally developed for a flagship product yet to be unveiled, the Pink Fuse offers enhanced resolution, dynamics, and musicality while maintaining the warmth of the Purple fuse, making it a game-changer in the realm of audio fuses.

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  • Synergistic Research

    Synergistic Research Pink High-End Slow-Blow Fuse

    SKU: SR Pink Slow-Blow Fuse

    (4 reviews)
    £208.29
    Ex. VAT

    Investing in the Synergistic Research Pink High-End Slow-Blow Fuse promises to revolutionise your audio experience with its cutting-edge technology and years of research behind it, delivering unparalleled performance and elevating your system's sound quality to new heights. With its unique combination of the latest UEF compound and high voltage conditioning process, originally developed for a flagship product yet to be unveiled, the Pink Fuse offers enhanced resolution, dynamics, and musicality while maintaining the warmth of the Purple fuse, making it a game-changer in the realm of audio fuses.

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The Master Fuse is Synergistic Research’s most advanced design, engineered for maximum resolution, dynamics, and soundstage depth. The Purple Fuse, while more affordable, offers excellent performance and long-lasting reliability. Both elevate your system, but the Master Fuse sets the highest benchmark in the range.

Yes. Synergistic Research fuses (including the Master, Purple, Pink, Orange, and Blue) are directional. For best results, install them so electricity flows left to right when viewing the fuse label. Many listeners report subtle sonic differences when reversed, especially after the fuse has been broken in.

Yes. For example, Synergistic Research Black fuses typically require around 200 hours of break-in, with about 90% of tonal change settling after 100 hours. Patience is rewarded, as long-term listening reveals deeper improvements in tonal balance, staging, and overall clarity.

Hi-fi fuses are safe to use when they are the correct rating and type specified by the manufacturer. They function in the same protective way as standard fuses, but can use different materials, construction methods and optimisations.

Some listeners report improvements in clarity, focus, and low-level detail after fitting a hi-fi fuse. These changes are typically subtle and system-dependent, making fuses more of a fine-tuning option than a primary upgrade.

We have tried and tested various different fuses from multiple 3rd party manufacturers, as well as the standard off the shelf fuses, and we believe that audiophile fuses do offer improvements while maintaining safety standards. Like any fuse, audiophile fuses will still blow above their rated amperage to protect your power connections & equipment. We understand that it seems counter-intuitive for a fuse to make improvements, however, we, along with many other audiophiles, have found that there are improvements to be found when swapping out an off the shelf fuse for an audiophile fuse. We highly recommend trialing an audiophile fuse in your system to hear the difference yourself.

Many users report improvements in clarity, dynamics, and noise floor when using high‑quality audio fuses.

They are usually fitted in Uk 3 Pin plugs, IEC inlets, or internal fuse holders within audio equipment.

Some manufacturers recommend a short running‑in period for best performance.

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