Hi Fi Amplifier circuit

admin February 24, 2011 7 Comments

Hi Fi Amplifier Circuit – 2X12 Watts


Here is the circuit of a 2X12 watt H iFi  amplifier circuit using IC TDA 2616 from Phillips.A quiet simple and robust circuit using very less components.This makes the circuit ideal for a portable power amplifier.The circuit delivers 12 Watts power on  8 Ohm speaker for each channel at +/- 12 V dual supply.

The TDA2616 is a  stereo power amplifier IC comes  in a 9-lead single-in-line (SIL9) plastic power package (SOT131). This IC is  specially designed for mains fed amplifier circuits, such as stereo radio,tape  and television .The IC has good gain balance of both channels and Hi-fi in accordance with IEC 268 and DIN 45500 standards.Also the IC TDA 2616 has special inbuilt circuit for the  suppression of noise signals at the inputs, during switch-on and switch-off.This prevents click sounds during power on and power off.

Hi Fi Amplifier Circuit Diagram with Parts List.

Hi Fi Amplifier Circuit Schematic

Hi Fi Amplifier Circuit Diagram



  • All capacitors except C10 & C9 are ceramic.
  • All capacitors must be rated 50V.
  • Use a well regulated and filtered +/- 12 V dual power supply that is able to provide at least 2 A continuous current.

TDA 2616 Pin assignment & layout.

TDA 2616 PIN Description

TDA 2616 PIN Diagram and Configuration

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  • ram
    July 12, 2015

    sir please tell me capacitance tallrence please

  • Chin
    November 7, 2014

    Hi if i just use normal 12v – 1A power supply adapter. And attach its positive to +12v and negative to -12v of your circuit. Will it work without giving noise.
    On standby when we haven’t connected anything to the input mostly circuits like this gives huge noise. I add potentiometer but nothing happens to make hum sound low. Can you please help me????

  • Sym
    June 29, 2013

    I am tried this amp.
    But it sound is not clear it continous cracking .
    So help how can i overcome it

    • January 14, 2014

      hi .. This Ranjan from bangladesh ..
      this is so simple circuits .. pls cheak this circuits without veritable resistor , and must use 220nf for input , and 8.2 ohm sires with 22nf capacitor .

      it must working and this time i am listening a song using this amplifier

  • vairavan
    June 8, 2012

    simble supper circuit

  • i-alam
    November 21, 2011

    i have two woofers of 70 watt what type of amplifier i should need 70 watt or 140 watt ???

  • Jonathan
    March 5, 2011

    This is good for about 7Wrms into 8ohms with a 12V supply. With a 16V split supply, this chip makes 12W into 8 ohms at .5% THD. C9 & 10 need only be 25 Volts. R1 & 2 should be about 2 ohms. Definately need a 4 sq in or larger heatsink.

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