Uploaded February 2026 | Updated September 2026, 3 weeks ago

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In this video I explain the difference between two types of 3.5mm audio splitter cables that are often confused with each other.

I’m using the UGREEN 30619 headset splitter cable as an example and showing how it differs from a standard 3.5mm audio Y splitter.

There are two common types of “splitter” cables:

1️⃣ Headset splitter (TRRS to 2× TRS)
This type is designed for devices with a single 3.5mm combo jack (headphones + microphone in one port).
It splits the signal into:
-Headphone output
-Microphone input
This is what you need if your laptop or phone has one combo audio jack, but your headset has separate mic and headphone plugs.

2️⃣ Audio splitter (TRS to 2× TRS)
This type only splits the stereo audio signal (left + right).
It allows two headphones to listen to the same audio source.
It does NOT support microphone input.

Even though both cables look very similar, they are wired differently:
• TRS plug = 3 contacts (no mic channel)
• TRRS plug = 4 contacts (includes mic channel)

If you use the wrong cable, your microphone will not work.
In this video I demonstrate the difference and explain how to identify the correct splitter before buying one.