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Reduces RFI and EMI Noise on USB Ports and Silences Jitter
The iSilencer3.0 from iFi Audio is the most direct and simple upgrade for any USB port. It lowers noise, RFI, and EMI by up to 40dB or 100x. The iSilencer3.0 is ideal for home and on-the-go devices connected to the USB port, including computer servers, hard drives, streamers, DACs, etc. Regardless of the system or the component, and regardless of whether your gear costs $100 or $10,000, the iSilencer3.0 terminates USB noise in its tracks.
Active Noise Cancellation Drawn from Military Radar Technology
Drawing from the military field (specifically the Thales Spectra radar cancellation system deployed in the French Dassault Rafale jet fighter), iFi adapted this technology to exclusively introduce the Active Noise Cancellation (ANC) audio power system. ANC technology is now a cornerstone of the iFi USB technology range.
Air defense radar is transmitted at a certain frequency. When the signal bounces off the aircraft, a receiver on board the aircraft picks up the signal and a computer analyses its base frequency/modulations, and an identical, but out-of-phase signal is then generated to cancel out the enemy radar signal.
By generating a signal identical to the noise signal but in the exact opposite phase, ANC completely cancels all the incoming noise. ANC is the perfect 'antidote' for power supply noise, which is the bane of USB audio. With ANC the power line is filtered for RF noise. The measured noise floor of 0.5uV (0.0000005V) is at the measurement limit of the Audio Precision testing equipment.
Using ANC, the background and inner resolution to recordings is no longer hidden. Sonics are much smoother, just like how good analog should be.
More Than one iSilencer3.0 Brings Additional Benefits
The iSilencer3.0 can be used not only at an active USB port, but also at unused USB ports where it will reduce radiated EMI, because the ANC circuitry is bi-directional and usually all USB ports share a single power bus. The iSilencer3.0 cuts noise, system-wide for all USB ports, including, for example, an active port that has another iSilencer3.0 plugged-in and connected to another device.
The iSilencer3.0's multiple ANC circuits will double the noise reduction each time the number of ANC units is doubled. So two iSilencer3.0s will kill double the noise of a single iSilencer3.0, and four will kill four times the noise of a single iSilencer3.0, as long as they are plugged into the same block of USB ports (and even if only one iSilencer3.0 has one device such as a DAC connected into it).
USB3.0 Technology at the Cutting Edge
It is now a hallmark of all the latest iFi signal and power products to be USB 3.0 standard. USB 3.0 is backwards compatible with USB 2.0, and in terms of the specifications, USB 3.0 is superior to USB 2.0 (e.g. the wire gauge specification is more exhaustive and the connections are better). Hence, the iSilencer3.0 is USB 3.0 standard but also USB 2.0 compatible.
|iFi iSilencer USB Noise Filter 3.0 Product Reviews|