Sound output

Computer speakers, or multimedia speakers, are external speakers, commonly equipped with a low-power internal amplifier. The standard audio connection is a 3.5mm (1/8 inch) stereo jack plug often colour-coded lime green for computer

sound cards. There are also USB speakers. More sophisticated computer speakers may have a 'subwoofer' unit to enhance bass output. Some computer displays have rather basic speakers built-in. Laptops come with integrated speakers. For some users, a lead connecting computer sound output to an existing stereo system is practical. This normally yields much better results than small low-cost computer speakers.

Headphones are a pair of small loudspeakers, or less commonly a single speaker, with a way of holding them close to a user's ears and a means of connecting them to a signal source. They are also known as earphones, earbuds,

stereophones, headsets or, informally cans. In the context of telecommunication, the term headset is used to describe a combination of headphone and microphone used for two-way communication.