Circuit Description

Figure gives the circuit diagram of 2X12 W Hi-Fi Amplifier. This amplifier circuit is based on TDA 2616 IC which is the core part of this circuit. The TDA2616 is a stereo power amplifier IC. It is a 9-lead single-in-line (SIL9) plastic power package (SOT131). This amplifier IC finds applications in mains fed amplifier circuits such as stereo radio, tape and television. It has gain balance for both of the channels and hi-fi according to standards such as IEC 268 and DIN 45500. This IC has special inbuilt circuit for the suppression of noise signals at the inputs, during switch-on and switch-off. This avoids click sounds during power on and power off.

Simple and less number of components make this circuit suitable for portable power amplifier circuits. A well regulated and filtered +/- 12 V dual power supply is used in this circuit to provide at least 2 A continuous current. The circuit can deliver a maximum output of 12 W power on 8 Ohm speaker for each channel at +/- 12 V dual supplies. This Hi-fi amplifier circuit can complement your audio system with ceiling speakers for home theater.

Circuit Diagram

Hi-Fi Amplifier Circuit

Hi-Fi Amplifier Circuit


  • Use a good quality PCB to assemble this particular circuit.
  • IC TDA 2616 is from Philips.
  • All capacitors except C10 & C9 are ceramic type.