USB DAC noise isolator review

I had to buy an isolator from usb ground noises from my puter to my DAC, i decided to buy two,

the IFI AUDIO ISILENCER https://ifi-audio.com/products/isilencer-plus/

and the wisdDenfender https://wiki.wisdpi.com/wisd-audio/wisddefender

My DAC's USB cable is 5m long, pluged on my pc's USB 3.0 back port,

the IFI does half the job removing most of digital noise, but still a lil wind blowing noise at high level at $70

my surprise was the Wisd device, it removed all noise, as if it was a toslink optical device and at around $40 priced, for 3 dongle, usb < usb, usb C< usb, usb c < usb c pack

Sometimes dearer doesn't mean better.

😉