Categories: Linear Amplifier

2 x 3W Stereo Audio Amplifier with IC BA5406

This is 2 x 3W stereo audio amplifier based on IC power BA5406. This circuit which will give you 3W power in each channel. This circuit will be great for indoor audio system.

Components List:

R1, R2 = 120 ohm
R3, R4 = 2R2 ohm

C1, C2, C11, C12 = 220nF nonpolar capacitor
C3, C4, C5, C6, C7, C8 = 47uF/16V electrolytic capacitor
C9,  C10 = 470uF/16V electrolytic capacitor

IC = BA5406


The BA5406 contains two sets of AF power amplifiers. It delivers 5W x 2 into 3 ohm loads with a 12V supply. The BA5406 has good low-voltage characteristics, and the “pop” sound when power is applied is small. It generates little radio-band noise, minimal RF radiation.

Recommended supply voltage: 5-15V max. Typical 12V. Ideally the power supply should be able to deliver over 2.5Amps. This means that a typical “cheap” plugin power supply (wall wart) will not be good enough. The power supply leads should be as short as possible. Quiescent current 20-70mA, typically 40mA.

Download the manual of 2x3W Audio Amplifier with IC BA5406 in PDF version:

Download the BA5406 datasheet:

circuit diagram

Recent Posts

Power Amplifier 45W Using uPC 1230 + Pre Amp Head uPC 1032

This is the circuit diagram of power amplifier 45W using power uPC 1230 as the…

55 years ago

Horn and Lamp Flasher Circuit for Car Reversing Gear Mode

The Horn Circuit This is a basic circuit of car horn and lamp flasher that…

55 years ago

Alarm Circuit for Drinking Water

This is the circuit diagram of drinking water alarm based a small water sensor by…

55 years ago

200W MOSFET Amplifier based IRFP250N

Here is the 200W MOSFET amplifier powered based on four piece of IRFP250N, they are…

55 years ago

300W RMS Stereo Power Amplifier based IC TDA7294

This is the 300W RMS stereo power amplifier circuit project. This amplifier is based four…

55 years ago

Stereo Tone Control with Line In + Microphone Mixer

This is an active stereo tone control circuit using very well known op-amp IC of…

55 years ago