I impompo yesirinji ibhekiselele kwisixhobo sokulawula oomatshini kunye ne-elektroniki, elawula i isirinji impompo tyhala intloko ukusebenza kwi umqheba wokutyhala wesirinji ngenjini ukuze ulawule isantya sokutofa.I impompo yesirinji isetyenziswa ngokudibeneyo ne isirinji yokutofa ulwelo emzimbeni wesigulana ngemitha encinane kunye nolawulo oluchanekileyo lobungakanani.Ngokwenani leetshaneli, inokwahlulwa ibe yitshaneli enye kunye ne-multi-channel (itshaneli ezimbini, i-channel ezine, i-channel ezintandathu, i-8-channel, i-ten-channel, njl.