I think that was supposed to be "planar". You have a connection for an incoming source and another one for an out to your preamp, receiver, etc. Sometimes more than one input, sometimes an XLR connection(s) or both RCA and XLR.
You should get what sounds best, fits your budget, and meets your listening needs (on the go, at home, with other people around, etc.).
More information would be helpful in getting recommendations.
