Headsets are attachments for holding an earphone and transmitter to a user's head. Headsets are also known as earphones and stereophones. Headsets are widely used for voice communication to communicate with people located at diffent places using comnference phones or standard phones. Headsets can also be used to listen to music or other kinds of recordings. Headsets help in preventing other people from hearing the sound either for privacy or to prevent disturbance which is produced by a normal speaker. A headset is a pair of transducers that receive electrical signal from a receiver and use speakers to convert the signal into audible sound waves. There are many different types of headsets. Examples include circumaural, supra-aural, earphone/ear bud, IEMs/canalphones. Circumaural headsets have pads that go around the ears, usually very large and very comfortable. This is the type typically used in recording studios. Supra-aural headsets have pads that go on top of the ears. Headsets were commonly bundled with personal stereos. Ear buds or earphones are small headsets that are placed directly outside of the ear canal, but without fully enveloping it. Headsets are generally inexpensive and are favored for their portability and convenience. Canalphones are ear buds that sit directly inside the ear canal. Headsets offer extreme portability, sound isolation, and (in many cases) amazing sound. Headsets have been further categorized into phone headsets, wireless headsets, computer microphone headsets, and cordless headsets. Other headsets are commonly available.