I needed a solution for my Bose QC-25 with built in microphone to work with my PC. The audio worked fine, but without this adapter the mic just wouldn't work. I've read reviews of several other headphone splitters and was intimidated by people saying that the left and right audio channels were swapped etc. This UGREEN splitter is the best solution for connecting headphones to a computer with a microphone cable. In order for the Bose QC-25 to work with a PC, you will need a "USB Audio/Microphone Adapter" (search for the Sabra USB Audio Audio Adapter on Revain's website) in conjunction with this UGREEN headphone splitter. I also bought a USB adapter but found that the microphone only works with this splitter (no USB adapter). If for some reason you're in my situation and trying to get your Bose QC-25 mic to work but it just won't work with this splitter, try a USB audio/mic adapter like the Sabra brand or something similar, that should make it work.
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