Teli Professional Digital Echo Mixer Power Amplifier, Gold/Black

Its job is to take a line-level signal and make it loud enough to fill a room or a venue with sound., Power amps can feature one, two, or more channels. For example, a mono power amp would have one channel, and a stereo power amp would have two channels., Its function is mainly to amplify the weaker signal input from the audio equipment and generate a large enough current to drive the speaker to reproduce the sound., Speaker Impedance: 4-160hm. SNR (Signal/Noise Ratio): -100dbn, Input Power: 12Volts / DC5A AC220V-240V. Input Impedance: 47K, Output Power: 40W MaxR.M.S 20W. Frequency: 20Hz-20KHz