Review on 🔌 MillSO USB to 3.5mm Audio Jack Adapter - Sapphire Blue TRRS External Sound Card for Headphone, Speaker, PS4, PC - 1ft by Willie Ogunlana

***UPDATE*** 03/20/2021 A Millso representative contacted me to try to fix the fix error issue. They issued me a replacement adapter and I have yet to find out if it has the same problem as the original adapter. Thanks to them for trying to fix things. I'm adding a star for support and will update again when I get a chance to review a new device. - Initial Review - I wanted to find TRRS headphones with a microphone adapter for use with Windows computers. I bought it thinking it would work the way you would expect it to. Hear Zoom/Skype/WebEx calls and talk to everyone using the headset's built-in microphone. While it technically works, it has an annoying echo where an incoming caller's sound, which should only go to your ears, is fed back to the input channel and then broadcast to all callers. So if someone other than me is speaking, my system will pick up their audio and play it back during the call. It's like a little canyon. The echo is probably 100-100ms in its delay and it happens a couple of times the ring tone I made then comes back and then goes away. Very annoying. I took my headphones out of the equation, and even with no headphones plugged in, they reflect incoming headphone signals back to the "mic" input. This also happens when the headphones are not connected. I have tried this in several software applications. I even loaded and overlaid an Ableton (DAW) session. I listen in sealed in-ear headphones with a built-in microphone. The Ableton recording from the mic wasn't clear and contained a clear audio copy of what I was hearing in my ears. It was about -20dB below full, but it was clear as day. It wasn't the sound from my earphones bouncing back into the mic. It was full-bandwidth audio somehow picked up by the adapter back into the session. He did this without headphones. If I set the audio output to something other than this adapter, the problem goes away, but it defeats the purpose of a headset mic + headphone adapter. In addition, the microphone preamp is very loud. I suppose it would be foolish to claim that a device the size of a USB port could have a decent mic preamp. This thing is tiny. As a headphone adapter it sounds ok so 2 stars for that. I am returning it as it is not suitable for my purpose.