iFi iSilencer+ USB Noise Filter – Signal Jitter Reduction, Balanced Power, SuperSpeed Transmission

iFi iSilencer+ – USB Signal Purifier & Noise Eliminator

Experience cleaner, clearer digital audio with the iFi iSilencer+. Designed to actively remove electrical noise and signal jitter from USB connections, it restores purity to your music and unlocks a more open, natural sound.

Enjoy the New Silence
USB was never designed solely for audio. By carrying both power and data, it can introduce EMI/RFI noise from computers and power supplies—resulting in pops, clicks, and distortion. The iSilencer+ eliminates these issues at the source.

Active Noise Cancellation II®
Based on military-grade technology, ANC II® actively cancels incoming electrical noise by injecting an inverse signal—much like noise-cancelling headphones. This delivers up to 100× (40dB) noise reduction, outperforming passive filters alone.

REBalance® for Bit-Perfect Audio
REBalance® technology corrects signal imbalance and reduces jitter-induced packet errors, ensuring your DAC receives a clean, accurate digital stream—warmer tonality, clearer mids, and tighter bass.

Plug. Play. Pop-Free.
Simply insert the iSilencer+ between your computer and DAC. For even greater EMI reduction, plug additional units into unused USB ports—each added unit doubles noise reduction capability.

SuperSpeed USB 3.0
High-quality gold-plated connectors and USB 3.0 SuperSpeed architecture ensure robust, high-resolution data transfer, fully backward compatible with USB 2.0.

Multiple Versions for Modern Setups

• USB-A to USB-A

• USB-C to USB-A

• USB-C to USB-C

Why iSilencer+?
More options, upgraded circuitry with low-ESR capacitors, 10× increased filtering capacitance—and simply more silence.

Does your USB audio system suffer from annoying background noise?

Our new and improved iSilencer+ is a must if you want to enjoy vivid, open music.

Enjoy the ‘new’ silence.

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+.

Take a look at our Noisebusting Tech Note.

Plug. Play. Pop free.

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.

Double whammy.

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.

Double whammy.

Silence. Improved.

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.

Why iSilencer+?

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

Why did we name it iSilencer+? Simply because it just gives you more – more options, improved filtering, and just more silence.

Based on military tech, our improved Active Noise Cancellation II® actively cancels all incoming noise.

It does this in a similar way to active noise-cancelling headphones – it generates a signal identical to that of the incoming electrical noise but in the opposite phase, actively cancelling it out. This is highly effective at removing low- and mid-frequency noise, while passive insulating filters deal with higher frequency interference. This combination is measurably more effective at eradicating noise corrupting the USB signal than devices relying solely on passive filtering.

‘SuperSpeed’ USB 3.0 has a more exhaustive wiring specification which allows for a greater amount of audio transfer while still being backwards compatible. The units incorporate high-quality gold-plated connectors for optimal signal transfer.

REBalance® literally rebalances the signal to address the common problem of clicks caused by jitter. This is a form of digital distortion that leads to data ‘packet’ errors and cold harsh sound.

Our technology re-balances the signal to ensure that the digital signal received by the DAC is identical to the original source, no matter which audio format is being played.

Enjoy the silence! Our Active Noise Cancellation II® (ANC II) tech means that measured noise drops by 100x or 40dB in comparison to the common noise filter.