UNiKA SPT-3rt, Phase Tester, For XLR cables, microphones and loudspeakers, Consists of transmitter and receiver, Inputs: XLR for an external dynamic microphone, Outputs: XLR, Input selection: Microphone / Line / EXT microphone, Output level adjustable, Dimensions: 120 x 95 x 56 mm, Weight: 0.4 kg, Power supply via 1x 9V battery per unit (not included)