This audio amplifier schematic and guitar/harp amplifier project is a class AB audio power amplifier using a TDA2003 module power amplifier.
Output is 8-9 watts
It includes two JFET preamplifier stages and a bass boost tone control.
This Guitar/Harp amplifier uses a Cabela's Rechargeable 12-Volt Battery.
And the amp is totally portable requiring no extrenal plug and 8 hours of continous play time on a single charge.
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