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This reviewer's rating: Three of five stars. I bought the iSilencer+ because I have an analog lavalier microphone that connects to my computer via an external USB sound "card," and I was getting a lot of low-frequency hum through that connection. I plugged the iSilencer+ into my USB port, and I plugged the external sound "card" into the iSilencer+, and it did not make an audible difference. I assume that there are indeed some underlying causes of noise and hum over USB which the iSilencer+ is designed to abate. But the cause of MY hum, whatever it may be, is not one of them, because this product made no audible difference in the sound being received by my computer through the USB port. I am giving a 3-of-5 rating only to give iFI Audio the benefit of the doubt on this one; the product did not help me, but maybe it will help you.
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Does your USB audio system suffer from annoying background noise?
Connecting audio gear via USB can have pros and cons. While capable of passing hi-res data at max resolution and allowing bit-perfect transfer, USB was not created specifically for audio.
It carries both power and data. It is susceptible to electrical noise, for example, from the computer’s power supply. This has a negative effect on sound quality.
Fear not! At iFi, we first banished these gremlins with the iSilencer3.0 and now, we’re making silence sound even better with the iSilencer+.
Electrical noise on USB causes errors, data loss and poor signal integrity. You will hear these as distortion – pops, clicks and delays.
The iSilencer+ solves all of this quickly and easily. It plugs directly into the USB port of your computer as a link between your computer and your DAC.
It will remove electrical noise, both EMI and RFI, at source. Your music will seem clearer, warmer, and more transparent with improved bass.
As well as plugging the iSilencer+ into the active USB port between the computer and DAC, it can also be plugged into unused USB ports too. This will further reduce radiated EMI.
Each time the number of units (and therefore the number ANC II circuits) is doubled, noise reduction capability also doubles.
The iSilencer+ uses our latest Active Noise Cancellation II® technology. It decreases noise in a similar way to noise-cancelling headphones.
We use our REBalance® tech to get rid of clicks and distortion.
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.
We’ve added several flavours – it comes in 3 versions and includes the newer USB-C connector.
-USB-A to USB-A
-USB-C to USB-A
-USB-C to USB-C