Subminiature 40W Stereo Audio Amplifier Module Kit

The UAM4 is the big brother to Ramsey's extremely popular UAM2. It uses the latest spread spectrum amplifier technology to bring you clear, crisp, high-power audio without any of the heat which is normally associated with such an amplifier.

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10-14W Class A amplifier by TIP3055

I have built this amplifier and it does sound good. It requires a preamp as it hasn’t got much gain. It requires big heat sinks and a large transformer and a great power supply and careful wiring, but in the end it is extremely simple and it sounds very good.
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Power Amplifier Class A 25W

Musical Fidelity would let you believe that this is a Class A design. However, in common with most commercial amplifiers, it is a class AB amplifier - it simply has a rather high standing current in the output stage, which results in the first 8 watts or so being class A.
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50 Watt Amplifier with ICL8063 and 2N3055

This is a handy, easy to build general purpose 50 watt amp. The amp has an input for a radio, TV, stereo or other line level device. It also has a phono input for a record player, guitar, microphone or other un-amplified source.

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LM1875 Channel Stereo Power Amplifier 20 Watt

LM1875 Channel Stereo Power Amplifier 20 Watt
There are many instances where a simple and reliable power amplifier is needed - rear and centre channel speakers for surround-sound, ...

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MJE3055+MJE2955 Power Amplifier 60 Watt Into 8 Ohms

Introduction
This amplifier does not claim to be "state of the art", and in fact the base design is now over 20 years old. It is a simple amp to build, uses commonly available parts and is stable and reliable.
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Link : MJE3055+MJE2955 Power Amplifier 60 Watt Into 8 Ohms

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