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IEC 10A

iFi Audio GND Defender

£99.00 £82.50
SKU
iFi GND Defender
12 Months
New
24 hours
what's this?
SPEAKER CABLES:

A quantity of 2 means you will receive a pair of speaker cables e.g. for your front left and front right speakers. By entering a quantity of 1, you will get a cable for a single speaker e.g. centre speaker and this option also enables you to vary the length (and termination) of your cable for each speaker.

OTHER CABLES:

A quantity of 1 means you will receive a single cable in the case of aerial, satellite, subwoofer, digital coaxial & optical cables and a pair of cables in the case of 2 rca to 2 rca analogue audio cables.

NON-CABLE PRODUCTS:

A quantity of 1 means you will receive 1 of the specified products.

Available

Need help? Call us on 0800 772 3688 or 0208 905 1555

Prefer email? Contact us via sales@futureshop.co.uk

If you can hear a consistent hum coming through your speakers, whether playing music or when idle, then you may have multiple ground/earth connections in your system causing a ground loop. This ground loop can be fiddly to fix, however, iFi have come along with an intelligent solution to help solve this issue. Enter the GND Defender! By using a specially designed AI Ground Detection, the GND Defender can automatically disconnect the ground on your device if there is a ground loop, eliminating the low hum through your speakers. But it does not stop there, the GND Defender can even reinstate the ground connection to pass current if any faults are detected in your system. This ensures a safety fallback to help protect your equipment.

iFi Audio GND Defender

If you can hear a consistent hum coming through your speakers, whether playing music or when idle, then you may have multiple ground/earth connections in your system causing a ground loop. This ground loop can be fiddly to fix, however, iFi have come along with an intelligent solution to help solve this issue. Enter the GND Defender! By using a specially designed AI Ground Detection, the GND Defender can automatically disconnect the ground on your device if there is a ground loop, eliminating the low hum through your speakers. But it does not stop there, the GND Defender can even reinstate the ground connection to pass current if any faults are detected in your system. This ensures a safety fallback to help protect your equipment.

The optimum configuration for each system is one Ground/Earth for the whole system. If a system has multiple Grounds/Earths, then it often creates unwanted ground loops. These systems will then have an annoying low-frequency hum (emitted from the speakers). Current solutions either jeopardise (i) both safety and EMI shielding (e.g. cheater plug), or (ii) EMI shielding. And most are single country (US) uses only. The GND Defender in the correct way, intelligently detects a ground loop and will cut the ground for that component.

With a GND Defender at the IEC power input, it will intelligently detect and remove the ground loop at the component. Behind this, the GND Defender; Intelligently breaks DC ground loops to eliminate ground loop hum, EMI shielding is retained, Equipment Safety is unaffected (not a ground lift – so maintains equipment safety ground). If multiple ground loops exist, more than one GND Defender may be required. The GND Defender is smarter than the average ground lift. By a long way.

Features

  • High-performance glass passivated semiconductor
  • High Case Dielectric Strength of 1500VRMS UL Listed
  • X7R Capacitor
  • High-temperature stability
  • Flame resistant IEC socket/connector/chassis
  • Fireproof polymers UL94-V0
  • Surge overload rating of 220A. With a maximum rating >10A, continuous current rating 7A, it handles all voltages around the world from 90-240V
  • Intelligently block DC voltages from the mains to eliminate transformer hum. Equipment safety is unaffected
  • EMI shielding is retained

How do I know if I need one?

If you hear audible hum on your speakers or headphones, this is due to a ground loop in your setup and iFi's Ground Defender was designed to eliminate this unpleasant noise.

How do I use it?

Plug the GND Defender into the IEC socket of your earthed component, then plug the IEC power cable into the GND Defender.

How is an earth loop formed?

Sound systems can range in scale from being simple to very extensive. Generally, the more components that are earthed in the system, the more likely an earth loop will develop. It forms when there is more than one path for the audio ground or shield signal to flow through. For example, if a system consists of a preamplifier and power amplifier connected by RCA interconnects, and both the power amp and preamp are earthed to the mains, there are two paths for the ground signal to flow. One through the shield and return wire in the interconnect, and the other via the mains earth in the power board or house wiring and the two equipment earth wires.

Here is where the GND Defender can be of assistance. By inserting it into the earth system of the second (or more) low-resistance earthed component, you may reduce the effect of the earth loop, evidenced by a reduction in hum or buzz

Is lifting the earth from equipment safe?

To maintain earthing safety for connected equipment a maximum of 1.2V is allowed to develop across the 100 ohm resistance in the GND Defender, with excess current being passed through without hindrance.

Should I use just one? Or multiple?

Ideally you should use one Ground Defender per audio component, but also you should remember to connect at least one such product to your power bar/conditioner directly.

What about unearthed systems?

The GND Defender won’t be of benefit to an unearthed system (where all the components have double insulated 2 pin power supplies). Instead, it will probably help if the system can be connected to mains earth. Ifi audio makes the Ground Hog cables for this purpose. Earthing this sort of system may result in less hum and fewer digital errors from digital equipment.

Specifications:

  • AI Ground Detection: Each unit will automatically disconnect the ground on that device
  • Ground Safe: Auto reinstatement of ground connection to pass current if a fault is detected
  • Voltage rating: 90 – 240 volts
  • Surge overload rating: 220A
  • Continuous current rating: 10A (1100W – 2400W)
  • Universal IEC: Hospital-grade IEC connectors
  • Dimensions: 68 x 37 x 32 mm / 2.7” x 1.5” x 1.3”
  • Weight: 61g / 2.2oz
  • Warranty period: 12 months

About iFi Audio Made in United Kingdom

iFi is a brand new line of electronics with trickle-down technology licensed from AMR and aimed primarily at the future, Computer Audio generation. All iFi products boast Class A analogue circuitry with no DSP and the signal stays ‘Bit Perfect’ throughout.

How a product looks and performs matters, but so does its impact on the environment. That’s why nearly every iFi product and its packaging are made from highly recyclable materials like aluminum, paper, recycled plastic and why we refuse to use harmful toxins in our components. iFi Audio do this to ensure that every product they release meets their environmental standards.

Specifications:

  • AI Ground Detection: Each unit will automatically disconnect the ground on that device
  • Ground Safe: Auto reinstatement of ground connection to pass current if a fault is detected
  • Voltage rating: 90 – 240 volts
  • Surge overload rating: 220A
  • Continuous current rating: 10A (1100W – 2400W)
  • Universal IEC: Hospital-grade IEC connectors
  • Dimensions: 68 x 37 x 32 mm / 2.7” x 1.5” x 1.3”
  • Weight: 61g / 2.2oz
  • Warranty period: 12 months

UK Delivery

 

1. We use Royal Mail 1st Class Services as a Standard Postage Option

Orders received before 4.30pm Monday to Friday (excluding Bank Holidays) are usually dispatched the same day by FIRST CLASS post (unless premium postal or timed courier services are selected), subject to stock availability. Over 98% of our orders are usually delivered the next working day including Saturdays.

Standard delivery is usually within 2-3 working days, although 98% of all orders are delivered the next working day including Saturdays . In extreme cases, such as delivery to the Highlands and Islands, this may take 3 days.

All items are fully insured and come with an invoice from Futureshop.co.uk. We use the Royal Mail for delivery of small packages and DPD or Interlink Express for items that weigh over 2KG. Items over 2KG are fully insured and will usually be delivered within 48 hours of placing your order Monday to Friday subject to stock availability. For International orders, we use FedEx Services where customers have selected this option.

Please note, special orders for non-standard cable lengths or custom-made cables may be subject to longer delivery time-scales. This may vary from manufacturer to manufacturer.

We offer 'Free UK delivery on orders over £99' subject to the following terms & conditions:

  • Applies only to orders with £99 or more of items (including VAT at the UK rate), at FutureShop.co.uk
  • Free Delivery on orders over £99 utilises Royal Mail First Class postal service for items weighing under 2KG. For items weighing over 2KG, we use DPD next working day services which deliver from 9.00am to 6pm within mainland UK (excludes Royal Mail Special Delivery Services and timed next day delivery services by UK Mail).
  • Applies only to deliveries to addresses within mainland UK and Northern Ireland addresses. Applies only to orders that are to be delivered to a single Mainland UK delivery address.
  • You will not be eligible for free delivery on your order if any items are cancelled or returned for a refund, bringing the total order amount below £99. Where items are returned, the refund due will be the cost of the item less any postage costs.
  • We reserve the right to change or discontinue 'Free delivery on orders over £99 promotion at any time.
  • FREE DELIVERY FOR ORDERS OVER £99 OFFER DOES NOT APPLY TO TRADE CUSTOMERS.

Free Delivery on orders over £99 utilises Royal Mail First Class postal service for items weighing under 2KG. For items weighing over 2KG, we use DPD or Interlink Express next working day services which deliver from 9.00am to 6pm within mainland UK.

Free Delivery for orders over £99 excludes Royal Mail Special Delivery Services and timed next day delivery services by DPD or Interlink Express.

 

Royal Mail 1st Class Shipping DPD Next Day Delivery

 

2. Special Delivery UK - Guaranteed Next Working Day

We have 99.9% of the UK covered With Royal Mail Next Day Special Delivery. We guarantee delivery to most UK addresses by 1pm the next working day. This includes Northern Ireland, Jersey and Guernsey. Some places take longer to deliver to but we still guarantee delivery within three working days by 5.30 PM.

For the Next Day Special Delivery service, orders must be received by futureshop.co.uk by 4.30pm weekdays. Orders after the 4.30pm deadline cannot be guaranteed for same day dispatch.

Please note, Royal Mail Special Delivery for next working day may not be possible where non-standard cable lengths are ordered. If this is the case, the item will be shipped via The Royal Mail Special Delivery service as soon as the cable is custom made.

For orders weighing over 2KG, we reserve the right to ship items using Next Day Pre-Noon Courier Services where Royal Mail Special Delivery option has been selected.

 

Royal Mail Special Next Working Day Delivery

 

3. Channel Islands & Northern Ireland

We accept orders from all Channel Islands including Alderney, Jersey, Guernsey and Sark. Unless you select a premium service, Items weighing under 2KG are delivered using our standard UK delivery option above. For items weighing over 2KG, a surcharge may be applied for all deliveries to the Channel Islands as well as Northern Ireland.

 

European Countries

Deliveries to EU member states are subject to 20% VAT. We offer the following shipping services:

  • Royal Mail First Class International Untracked Airmail Services - Items are usually delivered within 10 working days.
  • Royal Mail First Class International Tracked Airmail Services - Items are usually delivered within 3 to 7 working days.
  • DHL Express International - Items are usually delivered within 24 to 48 hours. DHL orders must be received by 3:30pm for next day service to most destinations in Europe
  • Federal Express International Priority - Items are usually delivered within 24 to 48 hours. FedEx orders must be received by 3.00pm for next day service to most destinations in Europe
  • Federal Express International Economy - Item are usually delivered within 48 to 72 hours

 

Royal Mail International DeliveryRoyal Mail International Tracked DeliveryFedEX Express Economy International DeliveryFedEX Express Priority International DeliveryDHL Worldwide Express International DeliveryDHL Econmy Select International Delivery

 

Worldwide - Excluding UK & Europe

Deliveries outside of the EU are not subject to 20% VAT and so the 20% tax on items is automatically deducted when you login or register.
We offer the following shipping services:

  • Royal Mail First Class International Untracked Airmail Services - Items are usually delivered within 15 working days.
  • Royal Mail First Class International Tracked Airmail - Items are usually delivered within 10-15 working days.
  • DHL Express International - Items are usually delivered within 48 hours. DHL orders must be received by 3:30pm in order to ship items the same day, subject to stock availability.
  • Federal Express International Priority - Items are usually delivered within 48 hours. FedEx orders must be received by 3.00pm in order to ship items the same day, subject to stock availability.

Where the actual weight of the package significantly exceeds the shipping cost charged on orders, we may write to you for an additional shipping charge. For larger orders, items may be shipped in multiple packets.

 

Royal Mail International DeliveryRoyal Mail International Tracked DeliveryFedEX Express Economy International DeliveryFedEX Express Priority International DeliveryDHL Worldwide Express International DeliveryDHL Econmy Select International Delivery

 

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