KGUSS Topping HS02 USB 2.0 Audio Isolator - withstands up to 1500VDC, USB-B and Type-C Input, USB-A and Type-C Output, Compatible with PCM32bit 768kHz DSD512

Hub con aislamiento galvánico para aislar tu dispositivo de audio (como por ejemplo un DAC) del PC. Este hub aisla completamente el ruido electrico que las computadoras producen hacia tu dispositivo de audio. Indispensable para equipos de audio y DAC's de alta calidad.

I was dealing with GPU noise from my NVIDIA RTX 3060 12GB when a game was running with both my iFi Zen Air DAC and also my Topping DX3 Pro+. The reason is because my headphone amp is a valve/tube amp so it must be earthed due to the very high voltages, and this meant there was a ground loop with the noise from my PC. I tried the usual tricks of putting everything on the same extension lead, which while it did reduce the noise, it did not eliminate it and that was problematic when using my Beyerdynamic DT990 Edition 600 Ohm headphones. So I went ahead and got this USB isolator since it supports USB 2.0 hi-speed (so it should actually handle above PCM768 @ 32-bit and DSD512/48 without issues, but I do not have a DAC capable of going higher to test). While it was working, and the computer noise was ENTIRELY eliminated, I was getting random and very often cutouts from the audio. Windows and Audirvana could still 'see' the DAC, just that the audio stream was getting cut off for some reason. This was plugged into one of the USB 3.0 ports (*just* 3.0, not Gen 1 or higher). I decided to try plugging it into a USB 2.0 port as I do know there can be compatibility issues with 3.0 ports, and I also shortened the cable to 1.5m. This totally fixed the issue I was having, and now I can easily send PCM768/DSD512 to the Topping without any dropouts of any kind. The iFi also handles DSD256 without any issue too. Even new motherboards released today have USB 2.0 ports specifically because 3.0 (and higher) can't always handle 2.0 devices correctly, and after reading the datasheet for the USB isolator chip they're using, it is very specifically for 1.0, 1.1 and 2.0, and requires incredible precision on the circuit layout to work correctly - this is one reason why this is expensive. So it gets 5 stars because not only did it entirely eliminate the GPU noise, but the big improvement in the noise floor seems to have given the valve/tube amp a bit more room to breathe, as I noticed a subtle improvement in the attack of synthesizer sounds. Your mileage will vary here obviously, such as how well trained your ears are, what gear you're using and what audio format you're using.

Gran producto, super bien construido, hasta el empaquetado es extraordinario, definitivamente la mejor solucion para ground loops

Fonctionne bien pour enlever tout les bruits parasites dans le son dues à une mauvaise alimentation électrique. Isolation de la terre. Par contre, avec une carte son, le bruit revient quand tu branches un instrument dans la carte son pour enregistrer….. Le prix est également exorbitant pour un si petit boîtier avec quelques fils à l’intérieur….

This completely solved the high pitch whine coming out of my KRK Rokit 5 monitor speakers. USB noise coming from PC/GPU was the source. My understanding is this thing severs the power signal from the PC USB and transmits and cleans only the data signal. Clean external 5V USB C power source supplies clean power for the output to the USB powered device. Here's my equipment and routing now FYI: PC USB --> HS02 (with separate 5V USB C power source) --> Roland Duo Capture EX audio device --> KRK Rokit 5 monitor speakers (TRS balanced 1/4" patch cables). PC and monitor speakers all plugged into the same power bar. A bit on the expensive side and this thing is smaller than I had imagined, but worth it to eliminate the noise to keep my mental stability.