Do you hear distracting background noise with your USB audio system? The iSilencer+ from iFi Audio is a must-have if you want to enjoy lively, open music without noise. Connecting audio devices via USB has advantages and disadvantages. While USB is capable of transferring high-resolution data at maximum resolution and allows for bit-perfect transmission, it was not designed specifically for audio. It transmits both power and data. Therefore, the USB signal is susceptible to electrical interference, e.g. from the computer's power supply. This has a negative effect on the sound quality. Electrical noise on the USB causes errors, data loss and poor signal integrity. You will hear this as distortion, clicks and delays. The iSilencer+ fixes all these problems quickly and easily. It plugs directly into your computer's USB port, connects your computer to your DAC and removes electrical noise at the source. Your music sounds clearer, warmer and more transparent, and bass is improved. The iSilencer+ uses iFi Audio's Active Noise Cancellation II technology and actively suppresses all incoming noise. It reduces noise in a similar way to noise-cancelling headphones. A signal is generated that is identical to the incoming electrical noise, but in the opposite phase, actively suppressing it. The Active Noise Cancellation II technology achieves that the measured noise is reduced by 100 times or 40 dB compared to a conventional noise filter. Enjoy the silence!