This circuit is of an 2x 2,500W RMS stereo amplifier, super-light and without switching-mode power supply. The circuit just shows a channel, and the power supply that it assists to the two channels. The audio circuit should be duplicated, but the power supply assists to the two channels without [...]

This circuit consists of two identical intercom units. Each unit contains a power supply, microphone preamplifier, audio amplifier and a Push To Talk (PTT) relay circuit. Only 2 wires are required to connect the units together. Due to the low output impedance of the mic preamp, screened cable is not necessary and ordinary 2 core [...]

100watt Amplifier bipolar circuit

This is a basic 100 watt power amplifier designed to be (relatively) easy to build at a reasonable price.
    It has a better performance (read: musical quality) than the standard STK module amps that are used in almost every mass market stereo receiver manufactured today.
When I originally built this thing, it was [...]