VizGiz 2 Pack TRRS to TRS Adapter 3.5mm Plug Jack 1/8'' Connector Converter for Phone Earphone Headphone Earbuds Microphone 4 Pole to 3 Pole Computer Camera Recorder Sound Card Amplifier MIC Port

Work well.

I installed this product for my stereo headphones. Works as expected. Nothing to dislike.

I have some Apple earbuds with a TRRS 3.5 plug that don't work in certain devices that expect a TRS plug. I purchased this adapter specifically to convert TRRS to TRS, but neither adapter in the 2-adapter package worked. I found that I could not insert the earbud plug all the way into the adapter no matter how hard I pushed. Assuming that's just as far as it was supposed to go, I plugged it into a device that expects a TRS plug, but got no sound. I tried a different TRS device, and still no sound. A pair of TRS headphones worked fine in both devices and the earbuds work fine in an old iPod (that expects the TRRS plug).

Decent quality and price

I think these are actually wired incorrectly to work for standard earbuds with an inline mic. Pushed so only 1 pole has contact, they have full audio from the right ear, but pushed so the second pole has contact or more, it's fully muted audio.

Most headphone microphone splitters seem to be using a TRS (3 pole) female jack so if you have a TRRS (4 pole) microphone male connector it would not work. This converter fixed that issue for me.

These are good quality and perform just as they should.

This adapter is internally connected as follows:TRRS ring #2 (ground) <=> TRS sleeve (ground)TRRS sleeve (mic) <=> TRS tip & ringDevices with a true 2-pole mic input jack may short the ring of this adapter's TRS plug to its sleeve. If the device's mic jack sleeve contact is long enough to touch both the sleeve and ring of this adapter's TRS plug, the mic signal will be shorted to ground.Some devices may have mic input jacks which are electrically 2-pole but equipped with a shorter sleeve contact to ensure compatibility with 3-pole plugs. Those devices should work fine with this adapter. Only devices with true 2-pole TS mic input jacks are affected by this compatibility issue.The manufacturer could have avoided this problem by leaving the ring of the adapter's TRS plug unconnected. I am not sure if the ring connection is necessary for compatibility with some 3-pole devices, but as far as I know that isn't the case. The manufacturer may want to look into this and consider revising their design if it would improve overall compatibility. (Hint, hint)