1.6W Mono Audio Amplifier Project is based on TDA7231, which is class AB power amplifier with a wide range of supply.
- Power supply: 5 To 12 VDC
- Output: 1.6 W, 4 Ω / 1 W, 8 Ω
- Low crossover distortion, soft clipping
- PR1 Preset for Volume Adjust
- Terminal pins for connecting power supply, input and output
- Power On/OFF Switch
- Power-On LED indicator
- Four mounting holes of 3.2 mm each
- PCB dimensions 36 mm x 52 mm
1.6W Mono Audio Amplifier – [Link]
This is another circuit from India that uses an obsolete IC that is not made anymore.