The EasyEDA "Tesseract" DIY Guitar Practice Amplifier is an LM386 based low power amplifier designed to deliver up to about 500mW into an
8 Ohm speaker when run from a 9V battery.
**Tesseract can be heard on YouTube here:**
>https://youtu.be/9XzodyefyV8
The design given here - which includes a complete PCB design and Bill of Materials - is highly flexible and allows the several options...