Why is my 3.5mm cable causing weird audio issues with my headphones?

July 21, 2025 1 answer
Asked by WanderLust123
I just picked up a male-to-male 3.5mm to dual 3.5mm aux cable to connect to my headphones. The plugs fit perfectly, but when I tested them using a stereo sound test on YouTube, I noticed something odd: the audio played through both sides of my headphones even when the test should only send sound to the right side. Plus, when I tried to test the left side, there was silence. How is it possible for this to happen if all parts seem functional?

Answers

AudioNinja88
It sounds like you might have a mono cable instead of a stereo one. Sometimes the plug can look dual-channel, but if itโ€™s wired for mono, both channels will transmit through one side. You can tell by looking closely at the jack; if thereโ€™s only one ring, itโ€™s likely mono. Just double-check the specs, and you might need to grab a true stereo one instead.

HeadphoneGuru456: Actually, I looked at the cable, and both ends seem to have dual channels. So Iโ€™m not sure if that's the issue.

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