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iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
  • iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0
iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0

iFi iDefender+ USB Power Isolator – Ground Loop Noise Reduction, HiFi Audio, High-Speed USB 3.0

$75.99
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Reliable shipping

Flexible returns

iFi iDefender+ – USB Power Isolator & Ground Loop Noise Canceller

Eliminate unwanted buzz, hum, and USB power noise from your audio chain with iFi’s iDefender+. Designed for audiophiles, it improves resolution, dynamic contrast, and overall audio clarity.

Key Features

  • Ground Loop Isolation: Detects and breaks ground loops that cause hum and distortion in your audio system.

  • USB Power Cleaning: Blocks noisy USB power from the computer and feeds your DAC with clean 5V from an external adapter (like iFi iPower X or iPower Elite).

  • SuperSpeed USB 3.0: High-speed, gold-plated connectors ensure optimal signal transfer, fully backward compatible with USB 2.0.

  • Enhanced Circuitry: Upgraded low-ESR tantalum capacitors for better input/output filtering and reduced system noise.

  • Multiple Connector Options: USB-A to USB-A, USB-C to USB-A, and USB-C to USB-C to suit any setup.

Why iDefender+?

  • Reduces hum and noise floor for a cleaner, warmer sound.

  • Improves dynamic contrast, detail, and musicality of your USB-powered DAC.

  • Easy to integrate into existing setups without additional complexity.

Beat the buzz and enjoy your music in its purest form with iFi iDefender+.

Is your audio still taking a beating from buzz and hum?

iFi’s iDefender+ is for those battling with noisy audio due to unwanted ground loops in their audio chain.

Beat the buzz

Is your audio still plagued by hum and buzz?

Using multiple plugs within your audio chain means separate earth/ground points. These multiple earth or ground points cause a ground loop problem. This creates an unwanted chain of noise, buzz and distortion.

Struggle no more. iFi’s iDefender+ provides the simple, effective solution you need.

Take a look at our Noisebusting Tech Note here.

Break the loop

When plugged into the source device’s USB socket, the iDefender+ detects whether there is a ground loop problem.

It breaks the ground loop by ‘intelligently’ disconnecting the computer’s earth and, as well as eradicating audible ground-loop hum, it lowers the system noise floor, improving resolution and dynamic contrast.

Using a USB DAC?

Are you using the iDefender+ with a DAC that relies on USB power from a computer rather than power from the mains or a built-in battery?

Good news. The iDefender+ offers an additional benefit. If an external power supply is plugged into the USB-C socket on its side, it blocks power from the computer and instead feeds the DAC with ‘clean’ power from the external supply.

If a high-quality, low-noise power adapter such as iFi’s iPower X is used, the performance of the USB DAC will be significantly improved.

New and improved.

We’ve upgraded the circuitry; low-ESR tantalum capacitors have been added for improved input and output filtering. Filtering capacitance has been increased 10-fold.

The iDefender+ now comes in 3 versions and includes the newer USB-C connector.

· USB-A to USB-A
· USB-C to USB-A
· USB-C to USB-C

Beat the buzz with the iDefender+.

‘SuperSpeed’ USB 3.0 has a more exhaustive wiring specification which allows for a greater amount of audio transfer while still being backwards compatible. The units incorporate high-quality gold-plated connectors for optimal signal transfer.

Inject 5 volts of clean power via the ‘separate’ USB-C port. This disconnects the USB power from the PC and replaces it with clean external power. For ultra-low noise, use our 5-volt iPower Elite or iPOWER X.

To ‘break’ the earth/ground on USB-powered DACs, adding a separate 5 volt supply is necessary . This is not required for DACs with an internally-powered USB section.

Kills USB power noise by ‘breaking’ the earth/ground loops in the correct way.

It significantly reduces the system noise floor and makes for better dynamic contrast, warmth and resolution.

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