How to: Connector types  While many amplifiers and speakers use
spring clips that grip bare wire, others require different types
of connectors to assemble your system. Here are some of the most
popular connector types:  RCA connectors are the most commonly
used for home stereos and video components, because they can
carry both audio and video signals.  Mini-plugs can also be
referred to as a 3.5mm or 1/8-inch connector. Portable devices
such as iPods use the 3.5mm interface as a line-out connection
for headphones or for connection to an auxiliary input on an
amplifier. Like RCA connectors, they can be used to make audio
and video connections.  Banana plugs are often used to make
speaker wire connections on high-end speakers. These connectors
have a uniquely shaped pin that bulges in the middle, causing it
to resemble a banana. They are used in pairs and require binding
posts.  Speaker pins are also used to terminate speaker wire
connections. Instead of a wide body like a banana plug, a
speaker pin has a strai