Technical parameter : TB Series amplifier's power output for 4-16Ω/70V/100V (120V) fixed resistance / pressure form. TB Series amplifiers are a reliable short-circuit. Overload protection device. When the power output of external short-circuit line. Local short circuit and the overload. Input signal is too large. Impedance does not match (such as access to high impedance load resistance at the end of output), such as caused by overload, automatically cut off, and issued warning signals (PROT indicator stop flashing). At this point, should first turn off power switch, check the cause of the malfunction, failure to be removed, and then re-open the power switch. TB series are a pre-amplifier, microphone input with the Road, in which the microphone with a silent tone functions, three line inputs, which can be accessed by CD. Tuner. Recording Block. Microphone and line level are independently adjustable. Not all the way line-out, access keys can be used recordings or other amplifier. The machine has a unified volume control, so that can easily adjust the sound output.