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.
- 1 x Stereo Amp Cable.
- 1 x PP3 Battery Clip Lead (Heavy Duty).
- 2 x 8 Ohm 66mm Speakers.
- 1m Figure 8 Speaker Cable 2x (7x0.18mm).
- 1 x Stereo Amplifier PCB
Note: The following components have been pre-assembled and soldered onto the Stereo Amplifier PCB.
- 1 x NJM2073D Stereo Amplifier IC.
- 1 x 8 Pin IC Holder.
- 2 x 10K Resistors.
- 2 x 4.7R Resistors.
- 2 x 100K Resistors.
- 2 x Ceramic Capacitor, 50V, 100nF.
- 2 x Electrolytic Capacitors, 16V, 470uF.
- 2 x Electrolytic Capacitors, 16V, 100uF.
- 1 x Electrolytic Capacitor, 16V, 10uF.
- PCB Length: 58mm.
- PCB Width: 35mm.
- Either: 1 x Zinc Chloride PP3 Battery.
- Or: 1 x 12V Wall Power Unit and 1 x 2.1mm PCB Mount DC Socket.
- Soldering Iron.
- Wire Cutters.
- Wire Strippers.
- Click here to download the essential information.
- Click here to download the full teaching resources.
- Click here to download Autodesk files for this product.
- 3D CAD Files.
- Click here to find out more about Autodesk.
- NJM2073 Dual Low Voltage Power Amplifier IC Datasheet.
This product is also available in retail packaging making theman idealgift. Click here to view the retail version.
This kit is designed and manufactured in the UK by Kitronik.
- PCB Length: 58mm.
- PCB Width: 35mm.
- PCB Component Count: 21.
- Voltage Nominal: 9V.
- Voltage Range: 2V - 15V.
- Standby Current: 7.5mA.
- Current Max at Nominal Voltage: 180mA.
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.
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!
Stereo Amplifier Kit examples sent in by James Ratcliffe at the Milton Abbey School in Dorset.
MP3 Stereo Amplifier Kit by A Level Product Design students at Barry Comprehensive School.
Stereo Amplifiers by AS Level students at Richmond upon Thames College.
A range of Stereo Amplifier designs by year 10 students at Meadows Community School, Chesterfield.
Stereo Amplifiers designed by 6th form students as part of their A Level Product Design course at Audenshaw School.
A video of us comparing our Amplifier Kits taken from our Ask Kitronik Live event 2012.
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, https://www.kitronik.co.uk/pdf/2136_stereo_amplifier_essentials_2_0.pdf. 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 byon Friday, 16 September 2016
Hi James, the kit is supplied with 1m of twin cable, this is to be cut in half to provide connections for both speakers. See step 5 in the build instructions for more information on this, https://www.kitronik.co.uk/pdf/2136_stereo_amplifier_essentials_2_0.pdfPosted byon Tuesday, 23 February 2016
The speakers used in this kit are 66mm in diameter, https://www.kitronik.co.uk/c3304-8-ohm-66mm-speaker.htmlPosted byon Friday, 22 January 2016
There is a technical drawing within the essential information document, https://www.kitronik.co.uk/pdf/2136_stereo_amplifier_essentials_2_0.pdf which shows the layout of the circuit and how the components are connected together.Posted byon Wednesday, 16 December 2015
The amplifier that is needed for the stereo amplifier is https://www.kitronik.co.uk/2944-tda2822m-stereo-amplifier-ic.htmlPosted byon Monday, 26 October 2015
The kit is supplied with the amplifier IC, which is already programmed. With the pre-built kit the students would only have to solder the power supply, speaker and audio input connections to the board. They would also need to place the amplifier IC into the IC holder which is located on the board.Posted byon Thursday, 7 May 2015
0voteA: You've given a capacity for the Mini Encapsulated Solar Cell so I'm assuming it's a solar cell/battery combination unit. Without knowing more about the unit I can't tell you much for certain. With 5V though you may be better off using our 3W amplifier (product code : 2158), it is designed to run from 5V whereas this stereo amplifier works best from 12V. With the 3W amp you'd be able to just connect your solar battery unit directly. You may or may not still have some issues at maximum volume depending on if the 2.5W rating of your battery is a peak maximum or continuous maximum. But as I said before I can't say for sure without more details. If you email the technical spec of the solar battery unit to email@example.com I can take a look.Posted byon Tuesday, 28 October 2014
0voteA: Hi Jon, It's a 2 minute job to attach the speakers. 10 solder joints including both the speakers and the PP3 clip. There is a 10% discount on this kit if you order over 300 units. It is explained in more detail here https://www.kitronik.co.uk/ordering/bulk-buy-discount-for-kits/Posted byon Friday, 11 April 2014
0voteA: Hi Armenay, we have a standard and deluxe stereo amp but we have only ever done one FM radio kit. Hope this helps!Posted byon Monday, 16 September 2013
0voteA: I don?t think this kit would work with 8 speakers. It can only output about 1W per channel, if you had 4 speakers per channel this would only allow 0.25W per speaker, this isn?t really enough to drive the speakers. Also speakers generate a lot of electrical interference as the cones move in and out, having many connected to the same channel would distort the sound coming out and cause a lot of problems. The difference between the deluxe amp and the stereo amp is that the deluxe amp has volume control and a power switch. Both models have a pre-built version which comes with all the parts soldered in.Posted byon Monday, 20 May 2013
0voteA: Yes the IC will drive a four ohm load (two 8 ohm speakers in parallel) so you can connect two speakers to each output. However it won?t be any louder or any better quality audio. If you want an on board on off switch then the deluxe amplifier might be a better option see: https://www.kitronik.co.uk/products/project-kits/ic-based-kits/deluxe-stereo-audio-amplifier-kit/ If you just want to add a power switch have a look at the following tutorial: https://www.kitronik.co.uk/resources/tutorials/how-to-add-a-power-switch-and-led-to-your-project-kit/ (No need to fit the LED & resistor if you don?t want them) If you need extra speakers see: https://www.kitronik.co.uk/products/components/audio/speakers/66mm-speaker-pack-of-10/Posted byon Friday, 21 December 2012
0voteA: You would need to be able to get access to the audio output from the toothbrush which I suspect may involve destroying it, not that I?ve seen one to be able to state with that any certainty. If you can get to the 0V signal and the audio signal then yes you could connect it to this kit and use your tooth brush as an audio source.Posted byon Tuesday, 18 December 2012
0voteA: The diameter is 66mm and the width of the speaker is 20mm.Posted byon Wednesday, 12 September 2012
0voteA: We do a deluxe version which is available with either an iPod or a jack version. See related products (top left).Posted byon Friday, 2 December 2011
0voteA: Yes this amplifier is perfect for use with an MP3 player. If you want some ideas as to how to design the enclosure click on the camera icon at the bottom of the product description.Posted byon Tuesday, 13 September 2011
Excl. VAT: £25.00 Incl. VAT: £30.00
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