What is a 3.5 mm ?

It is a cable used to connect your computer to your speakers or your earphones, you would use a cable.

3.5mm audio cable

You can find the 3.5mm audio out port in your computer sound card or your laptop. The port is marked green.

These days the 3.5mm audio cable is popularly used in smartphones to listen to music through earphones.

smartphone 3.5mm audio

Can You Get Surround Sound with a 3.5mm Audio Cable?

Yes, you can get surround sound with a 3.5mm audio cable, but not true surround sound.

A 3.5 mm cable doesn’t output multi channel sound It outputs only stereo sound with two channels – Left and Right.

However, if your 5.1 surround sound system come with Pro Logic, then the 2-channel audio input from your 3.5mm cable is capable of multi-channel surround sound.

The thing is you get only emulated 5.1 surround sound and not true 5.1 surround sound.

You may want to use a 5.1 Dolby Digital Decoder device to boost sound quality though.