Hopewell 2 AMP IN - 4 SPEAKER OUT SELECTOR Amplifier, Speaker Selector - Tested and Working - Hopewell Amplifier and Speaker Switch This flexible multi-channel device allows you to connect two amplifiers or audio devices and output audio to up to four sets of speakers. Supports two amplifiers and 4ch (8 speakers): Input Interface: Stereo left and right channel audio input terminals x 2 Output Interface: Stereo left and right channel audio output terminals x 4, Headphone output terminal x 1 Dimensions: 180(L) x 130(W) x 47(H) mm