iFi Audio iDefender+ USB Power Isolator


Audiophile USB Power Solution

SKU: IFI_IDEFNDER+ Categories: ,

iFi’siDefender+ USB Noise Cleaner

iFi’siDefender+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 loopproblem. This creates an unwanted chain of noise, buzz and distortion.

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

Break the loop

When plugged into the source device’s USB socket, theiDefender+detects whether there is a ground loop problem.It breaks the ground loopby ‘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 theiDefender+with a DACthat 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.

The online order is available for the USB-A to A, but also available as:

  • USB-A to USB-A
  • USB-C to USB-A
  • USB-C to USB-C


  • ANC (Active Noise Cancellation)
  • Isolates Ground Loops
  • Supports External Power Supply
  • USB 3.0 Superspeed Transmission (5.0 Gbps)
  • Compatible with USB Computer Port


  • USB: Super-Speed USB3.0 (and USB2.0 backwards compatible)
  • Connectors: USB3.0 gold-plated connectors
  • Dimensions(L x W x H): 50 x 20 x 9 mm
  • Weight: 6.6g
  • Warranty period: 12 months


A to A, C to A, C to C

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