Designed to enable 2 pairs of stereo loudspeakers to be connected to Hi-Fi power Amplifier and make it possible of listen to either pair of loudspeakers in separate or all together. Features: ․Suitable for speaker from 4 ohms to 16 ohms. ․Simple connection snap in push screw terminals. ․Stylish strong metal box. Note: With two 8 ohms speakers connected to TC-22, switched to position 1 or 2, the load presented to amplifier is 8 ohms, switched to middle (1+2) will make the two pairs connected serially and the load to amplifier is 16 ohms thus when both pairs are playing which will not overload the amplifier. 　 Packing Weight Export carton N.W G.W Dimension Blister 390 gm 30pcs 12 kg 13.5kgs 1.8'