Anybody want a laugh?

Works great. Reduces noise. Others on the market as well. Similar in concept to the devices that came around a few years ago for cleaning up USB signal. Not magic. It’s what the circuitry is designed to do. Flat-earthers can’t wrap their head around this.

If you’re referring to the USB “cleaners” like the iFi iPurifier, those have been analyzed by ASR and found to not only NOT do any cleaning, but actually added noise. 
So, just saying “works great”, without providing any evidence isn’t going to work for me. 

The notion of these things is they clean EMI and RF noise that can leak in and carry on the wires. They don't really do anything to the digital signal. The wires after the switch to the streamer might pick up more noise which this thing isn't going to help. From there to the DAC which might be USB or coax or optical again nothing the switch can do about that.then I guess if you have a really really bad DAC some might hear a difference. Save your money and buy a decent DAC instead of this switch. 

I have seen  much more expensive Audiophile switches 

After seeing $40 k Loudspeaker cables  this is a steal Z,!