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Stereo Amplifier, Pre-built

Exclusive to Kitronik
Teaching Notes
Key Stage 3
The Pre-built Stereo Amplifier Kit is supplied with all the resistors, capacitors & IC holder fitted. With the Jack Lead, speakers & power clip ready to solder.

Availability: In Stock.

Code1+ 5+ 50+
(£7.56 incl VAT)
(£5.70 incl VAT)
(£5.16 incl VAT)

Our pre-built version of our stereo audio amplifier kit allows you to focus more on product design.

The stereo amplifier kit is supplied with all the resistors, capacitors & IC holder fitted. Students just need to finish it by connecting the jack lead, speakers & power clip to the board.

It can then be used with any personal stereo equipment, including MP3 players. It uses a NJM2073D audio amplifier IC which can output 1W per channel. The kit is supplied with two speakers and a pre-made jack plug.

It has a PP3 battery clip and can run off any voltage from 2 to 15 volts. Output power at 9V is 1W per speaker.

It works nicely off a 9V battery (not supplied) or if you want to run it of the mains why not try our 12V wall power unit.

Note: You will only have to use the build instruction to connect the jack lead, power lead and speakers.


  • 1W per channel stereo amplifier.


Note: The following components have been pre-assembled and soldered onto the Stereo Amplifier PCB.


  • PCB Length: 58mm.
  • PCB Width: 35mm.



This product is also available in retail packaging making theman idealgift. Click here to view the retail version.

Buy British:

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

Physical characteristics:

  • PCB Length: 58mm.
  • PCB Width: 35mm.
  • PCB Component Count: 21.

Electrical characteristics:

  • Voltage Nominal: 9V.
  • Voltage Range: 2V - 15V.
  • Standby Current: 7.5mA.
  • Current Max at Nominal Voltage: 180mA.
Stereo Amplifier Designs From The James Hornsby School
Steve Tucker the Faculty leader for Design and Technology at The James Hornsby School in Basildon in Essex sent us these fantastic images of student stereo amplifier designs.
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Northfield School's D&T Department (@Northfield_DT) have shared these MP3 docking stations with us on Twitter. End of year assessments - DONE - great work!
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Stereo Amplifier Kit examples sent in by James Ratcliffe at the Milton Abbey School in Dorset.
Gallery Stereo Amplifier – Barry Comprehensive School
MP3 Stereo Amplifier Kit by A Level Product Design students at Barry Comprehensive School.
Gallery Stereo Amplifier – Richmond College
Stereo Amplifiers by AS Level students at Richmond upon Thames College.
Gallery Stereo Amplifiers – Meadows Community School
A range of Stereo Amplifier designs by year 10 students at Meadows Community School, Chesterfield.
Gallery Stereo Amplifiers – Audenshaw School
Stereo Amplifiers designed by 6th form students as part of their A Level Product Design course at Audenshaw School.
Ask Kitronik Amp comparison
Video A Comparison Of Our Amplifier Kits
A video of us comparing our Amplifier Kits taken from our Ask Kitronik Live event 2012.
IMG_9253 (Copy)
Amplifier/Speaker Case 3D Printing Resources
This resource has been designed to show how you can use our Mono and stereo amplifier module kits as the basis for a 3D printing project.


Posted by Luke, Friday, 16 September 2016 on product Stereo Amplifier, Pre-built


Where are the volume and on/off pieces? Are they separate? Does a battery box come provided and if so how big is it?


  • Posted by Michael Lockhart on Friday, 16 September 2016

    Hi Luke, The stereo amp kit doesn’t have a volume control one, however you can add one by using a dual swipe potentiometer and connecting one side to the source input signal, the other side to ground and the middle to the input on the PCB. There is a section on page 4 in the following document which shows how to add a power switch to the circuit, Lastly the kit doesn’t come with a battery cage as it can be powered from a 9V PP3 battery, but it can run on a voltage range of 2-15V’s.

Posted by James, Tuesday, 23 February 2016 on product Stereo Amplifier, Pre-built


I have bought this kit, but I do not know how to construct the rest of the pieces. Are you supposed to cut wire for the speakers in half, or does the kit come with 2 and I'm missing a wire?


Posted by Will Robinson, Friday, 22 January 2016 on product Stereo Amplifier, Pre-built


What diameter in mm are the speakers themselves. Im hoping for them to be 66mm. Thanks, Will :)


Posted by zanfer, Wednesday, 16 December 2015 on product Stereo Amplifier, Pre-built


Hi there can i please get the pcb tarck design with the components its for my gcse project looking forward for your reply thanks zanfer


Posted by Hartley maiden, Monday, 26 October 2015 on product Stereo Amplifier, Pre-built


Which integrated Circuit do I need for the stereo amplifier 2136 as I have lost the original.


  • Posted by Michael Lockhart on Monday, 26 October 2015

    The amplifier that is needed for the stereo amplifier is

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