What size of banana plugs should I use? April 03, 2024 16:35 4mm Banana Plugs are recommended for use when connecting to our Amps / Stereo Receiver's output terminals. Related articles What Size Banana Plugs are compatible? What would the power output of the CXA be if I connect two pairs of speakers? A1 User Manual What's the difference between the CXA81 and CXA81 Mk II? CXA61/81/81 Mk II Manual