This is a look at my homemade 50 Watt (25-Watt by 2-channel) guitar amplifier. It is LiFePO5 battery-powered. It runs for hours at levels loud enough to overcome traffic noise, and then some.
Many of the amplifier case parts were reused materials. The amp has given 2 years of harsh service.
Warning: you should only attempt building such an amplifier if you have good electrical/electronics practices, are quite familiar with lithium-based (LiFePO2) rechargeable battery safety, and have used the right battery for the right application, use a battery manager, have installed fuse(es), and provide for proper cooling. If you build such and amplifier, you do so at your own risk.
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