Beat the buzz

Using multiple plugs within your audio chain means separate earth/ground points. These multiple earth or ground points cause a ground loop problem, which creates an unwanted chain of noise, buzz and distortion. iFi’s iDefender+ provides the simple, effective solution you need. 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.

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 and by upgrading the circuitry, filtering capacitance has been increased 10-fold.

Technical Details