SPRODIO 2 Port Stereo 3.5mm Audio switcher selector Box Passive 1/8 TRS A/B Switch with Ground Switching MD21

Ironically this is the listing that made me feel most uneasy given its stated disclaimer about maybe needing a ground loop isolator in the mix to function properly. However, third time's a charm as it turns out and after two months of daily switching on it I can say there is no sign of slowing down on its operability. The red button has a solid and decisive feel to the spring whenever depressed, and it does its job flawlessly. It's a shame we live in a world now where product quality is so frequently lacking that "it works like it should" now impresses me, but there it is. Que sera sera I guess.

I plug just a mic into B and I use the switch as a toggle on/off. A is button-out - and since nothing is plugged in to A the mic is off. B is button-in and since the mic is plugged into B then button-in turns my mic on and button out turns the mic off.Exactly what I needed! A red button that easily turns my mic on and off! Cheap easy compact design too! :)I am not connecting 2 items using different grounds - so I get no ground loop buzz of course. You can get rid of a buzz by getting rid of the ground loop (an isolator would be easiest)

There's a crazy amount of feedback making it impossible to use. It's built tough and when you use regular cords they don't pinch, but, there's major feedback that causes loud humming even when speakers are turned all the way down and the headphones are unplugged. The switch works but to get the hum to go away you have to unplug one of the items which defeats the purpose of the switch.

Worked great for nearly (2) months, but recently the right channel has been cutting out. It's sitting on my desk (where I use it to switch between my Macs audio and headphones) so I simply just push the button again and the audio comes back. Wonder if it's just going to finally quit altogether. You'd think such a simple device would just work.

I use this toggle to switch audio between personal and work computers. The unit is a simple, solidly built tool that does one thing - and does it well. Also we'll prices compared to other, climate looking units. I recommend.

Got this as a source switcher in my mini component stack. Sound quality seems good, with no discernable loss in quality vs my previous RCA switcher, and there are no crackles or anything when switching sources. The chassis is nice and solid and the button has a good resistance and feel to the engagement. My only concern is that the whole internal assembly seems to shift inside the chassis. When plugging in the 3.5mm cables into the rear you can feel the jacks all move forward into the chassis and the button push out of the front a bit, and conversely when you push the button all of the jacks pop out of the back a bit. It's like the whole board assembly is just fit a little sloppy or wasn't secured properly during assembly. It doesn't seem to effect functionality at all, but it's a little disconcerting.

I use this switch to choose between my computer speakers and my headphones. My computer has only one audio output. This makes it simple to switch between the two. If you're using it in the way I do, please note that you need a cable to go from your audio output to the switch, and then you can use your existing cables for your headphones and your speakers to plug into the switch. Switch does not come with cables.

Chose this switcher for it's small size. I am using it to switch between a Mac Mini and a Windows laptop and haven't had any distortion when listening to music or humming when I have the systems all quiet. Also light enough I could have it installed under a shelf with some 3M tape.Only warning would be to use thinner 3.55mm cables, as the ports on the back are pretty close, you could run out of room with some chunky cables.