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This kit teaches how stereo amplifiers take a small signal and "magnify" it to drive two small speakers or stereo headphones. It's based on two LM386 Low Voltage Power Amplifier and one LM1458 operational amplifier IC. This kit gives you a good quality Stereo Amplifier. You can use it as an intercom, a booster amp for portable CD players, or in your robot. You can also use it to add sound effects for plays or practical jokes.