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MP3 Mono Amplifier V2.0, Pre-built

Exclusive to Kitronik
Teaching Notes
Key Stage 3
The Mono Amplifier Pre-built Kit is supplied with all of the resistors, capacitors, and IC holder fitted. Simply connect the Jack Lead, speaker and power clip.

Availability: In Stock.

Code1+ 5+ 50+
(£4.86 incl VAT)
(£4.02 incl VAT)
(£3.66 incl VAT)

Our best selling amplifier kit has had an upgrade and a facelift. Version 2.0 of our Pre-built Mono Amplifier Kit has a brand new IC and we've also made all of the components suraface mount for a neater design.

This audio amplifier kit can be used with any personal stereo equipment, including MP3 players. It uses the very polular LM836 audio amplifier IC which can output 0.7W of power. The kit is supplied with a PP3 battery clip and can run off any voltage from 4 to 15 volts.

Also supplied is a pre-built jack cable.

All that is required is to solder the jack lead, speaker & power clip to the board and you are good to go.


  • Pre-built kit allows you to concentrate on product design rather than assembly.
  • Works with a wide variety of mp3 players, phones and computer equipment.



  • PCB Length: 45.5mm.
  • PCB Width: 35.5mm.



Free samples:

Teachers can order a sample of this kit (one per school) here. You will need to select the kit from a list of all the sample kits; the stock code for this kit is 2154.
Note: this service is only offered to schools for evaluation purposes only.

Buy British:

 This kit is designed and manufactured in the UK by Kitronik.

Physical characteristics:

  • PCB Length: 45.5mm.
  • PCB Width: 35.5mm.

Electrical characteristics:

  • Voltage Nominal: 9V.
  • Voltage Range: 4 - 12V (Absolute Maximum 15V).
  • Typical Standby Current: 4mA.
  • Current Max at Nominal Voltage: 70mA.
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Posted by Tony Hobbs, Wednesday, 28 September 2016 on product MP3 Mono Amplifier V2.0, Pre-built


Is there any chance of ordering just the pre-built amplifier board? I have plenty of speakers and battery snaps, but have run out of boards.


  • Posted by Michael Lockhart on Wednesday, 28 September 2016

    Hi Tony, Unfortunately we are unable to supply just the built boards. This is due to us having speakers and battery clips automatically ordered when a batch of these boards are built and as such we wouldn’t be able to separate these out.

Posted by Raf, Tuesday, 8 March 2016 on product MP3 Mono Amplifier V2.0, Pre-built


What is the optimum input impedance for this amplifier? I have a high impedance source (4Kohms) and need to match it to this unit. Thanks.


  • Posted by Michael Lockhart on Tuesday, 8 March 2016

    If you take a look at the input biasing on page 3 of the chip datasheet this explains further. However with how the kit is designed your input impedance should be fine.

    1 people found this answer helpful.

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