Paodong banana plugs are very convenient when inserted into the holes on the front of the multi-purpose socket mentioned above in the stereo, and a very large contact area can be formed after the stereo is inserted. This characteristic makes it preferred for use in high power output equipment, to connect speakers and receivers/amplifiers. Sometimes you can see banana plugs divided into two groups, called: double banana plugs, banana sockets, banana plugs, T-shaped banana plugs, etc. However, not all equipment (especially speakers) can be used. The original form of the banana plug by a base + a nail + a shrapnel assembled from the initial shrapnel is stamped from the metal sheet into four leaves in its assembly into the nail after inverted and a peeled into four pieces of banana, so named "banana plug".