iFi audio SilentPower USB iPurifier PRO USB filter

USB Noise Purification for Hi-Fi Setups

The SilentPower USB iPurifier PRO is an in-line USB conditioner that cleans the digital and power path between a computer, streamer, or music server and a USB DAC. Standard USB cables carry stray currents, EMI, and RFI that raise the noise floor and blur fine detail in the audio signal. This compact device tackles all three problems at once, uniting the legacy of the iGalvanic3.0, iSilencer, and iDefender into one tool.

Three Noise-Fighting Technologies in One Box

Galvanic isolation decouples input and output circuitry so source noise cannot reach the DAC. Active Noise Cancellation duplicates and inverts unwanted interference on the USB power line to cancel it out. IsoGround technology removes excess earth connections to break ground loops, and a 4mm grounding port accepts a dedicated ground via the SilentPower Groundhog+ when a chassis ground is preferred.