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.
iFi’s iDefender+ is for those battling with noisy audio due to unwanted ground loops in their audio chain.
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.
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.
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.
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.
Beat the buzz with the iDefender+.
Inject 5 volts of clean power clean via the ‘separate’ micro 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 X.
Adding the separate 5 volts to the unit is necessary to ‘break’ the earth/ground on USB-powered DACs. This is not required for DACs with an internally-powered USB section.
Works great with my Schiit Fulla 3 DAC. I had so much ground noise from mouse and graphics card coming through the usb ports. By itself it did nothing because DAC is usb powered so I had to use extra 5v supply from extra phone charger adapter and extra usb/fan cord I had but did the job perfectly.
“I tried the Audioquest Jitterbug and it did nothing. So I returned it and purchased this. When I first connected it, it also failed to have any effect on the noise, but when I connected a power source directly to the iDefender, BAM. Pure silence from my PC to the DAC.”
“Both the iDefender + and the iSilencer + were born to solve the problems that many users may have in audio systems based on DAC-USB.
If you notice any kind of interference or are looking to give it a twist to finish tuning the set, without risking a lot of money, both products are worth a try.”
DACs convert digital information, stored or streamed by computers, into music we can hear through speakers or headphones.
Every device that’s a source of digital sound has a built-in DAC (TVs, games consoles, CD players, phones, portable music players etc). Dedicated external DACs sound much better than standard DACs used in digital devices such as phones.
In an electrical system, a Ground or Earth loop occurs when two points of an audio system both have a ground reference which causes a ‘potential voltage difference’ between them. Ground loops are a major cause of the noise, hum, and interference in audio, video, and computer systems.