An excellent addition to a USB signal chain, USB•FILTER connects to USB-C ports directly or to USB-A ports using the USB-A Adapters option Supports USB 3.1 with USB 2.0 backward compatibly. Ideal for use with OPTO•USB, SRC•DX or any USB DAC or component. USB•FILTER provides excellent RF/EMI line noise suppression on +5V/GND power and common/differential mode noise suppression on D+/D- data lines. The benefit of USB•FILTER is complementary to the differential signaling and spread spectrum clocking used by USB-C controllers to lower EMI and EMF radiation.
The USB-A Adapters option is a passive (metal-to-metal) design with no added circuitry. Be wary of 3rd party adapters/cables that contain RF noisy digital logic to support USB speed compensation or USB-C PD power delivery.
For best performance, install USB•FILTER with the plug side (male) connected closest to the signal origination (source) and the filtered receptacle side (female) connected closest to the signal termination (DAC). This orientation allows the TVS diodes to best mitigate ESD and suppress transient voltages.
Filter is Wurth Elektronik brand with an AudioWise 3D printed case (white PLA). USB-A adapters are Adafruit Industries brand.
