Noisy Cricket, based on the Ruby amp, with gain/volume/tone controls, gives all capabilities of a guitar amp for a little money.ģ.1 LM386 Bass Boost Frequency Calculation.Ĥ Resources.Ruby Amp, adds an input buffer to the Little Gem and also improves other sections of the circuit.Little Gem, an enhanced version of Smokey Amp, adding new features and a gain/volume control.Uses only 2 components and it is able to fit in a cigarette package. Smokey Amp, the smallest and least expensive.I t is a flexible device the frequency response can be shaped with some external components and there are plenty of examples of clever circuits that people have come up with over the years.ĭue to its low quiescent current drain and power consumption, it is suitable for portable battery-powered guitar mini amplifiers. This design (from the mid 70’s) has been always a popular choice for low-powered audio applications. The LM386 is a Voltage Audio Power Amplifier manufactured by National Semiconductor and JRC/NJM.
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