Before investing in gaming headphones, it is essential to determine your device's audio output. You can find the information on the packaging or web page of the gaming headset you are thinking of buying. There are three audio outputs: headphone jack (3.5mm), optical out, and HDMI. Gaming headphones with a 3.5mm jack will work with most computers and consoles, while Optical out requires an extra adapter for specific devices like TVs or game consoles. If your device doesn't have an HDMI port, gaming headphones with a 3.5mm jack may not be compatible. In that case, you will need to buy gaming headphones with a separate optical audio output adapter.