Transistor Amplifier with LED Indication Facility is a completely self contained standalone unit. The Transistor Amplifier is housed in a metal cabinet with a properly spread intelligently designed circuit layout on the front panel. The Transistor Amplifier works on built – in DC regulated power supply with short circuit protection and is provided with LED indication facility to work on 230V AC mains. Transistor Amplifier with LED Indication Facility has dedicated trainer board for each amplifier circuit.