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ETB-125 – Audio Amplifier (5W, 4 Ohms) with Power Supply is a compact and efficient trainer designed to study the operation of a low-power audio amplifier. This model demonstrates how audio signals are amplified to drive a 4-ohm speaker load using standard audio amplifier circuitry. The trainer features a 5-watt output stage, suitable for classroom demonstrations and experiments in analog electronics and audio systems. With built-in regulated power supply and speaker terminals, students can analyze gain, frequency response, distortion, and efficiency of the amplifier. It is ideal for practical understanding of amplification stages, coupling, and feedback mechanisms. Key Features:
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