Our newest version of our best selling Mono Amplifier Kit can be used with any personal stereo equipment, including MP3 players, making it an ideal kit choice for an amplifier case design project.
It uses an LM386 audio amplifier IC which can output 1.25W of power. The LM386 is a very popular audio IC that can be found in everything from radios to guitar practice amplifiers as it is suitable for battery powered devices.
The kit is supplied with a pre-built jack cable and a PP3 battery clip, and can run off any voltage from 4 to 12 Volts (Absolute Maximum 15V).
- Great value electronic project kit.
- Works with any stereo equipment.
- 2 x Electrolytic Capacitor, 25V, 100uF.
- 1 x Ceramic Capacitor, 50V, 47nF.
- 2 x 10R Resistor.
- 1 x 4K7 Resistor.
- 1 x LM386 Pre-amplifier.
- 1 x PP3 Battery Clip Lead (Heavy Duty).
- 1 x 3.5mm Mono Jack Lead, 50cm length.
- 1 x 8 ohm 66mm Speaker.
- 1 x IC Socket 8 Pin.
- 1 x MP3 Mono Amplifier PCB.
- PCB Length: 45.5mm.
- PCB Width: 35.5mm.
- Either: 12V wall power unit.
- Or: GP Alkaline PP3 Battery.
- Soldering Iron.
- Wire Cutters.
- Wire Strippers.
- Click here to download the essential information.
- Click here to download the full teaching resources.
- LM386 Datasheet.
- Autodesk Files.
- 3D CAD Files.
- Cutting Files for our Mono Amp Case.
- Please note if using 2D Design the .dxf file can be opened by using File -> Import.
- The mono amp case cutting data files are licensed under a Creative Commons Attribution-Non-commercial-Share Alike 3.0 Unported License.
This kit is supplied in a grip seal bag. It is also available in retail packaging. For more details on this version click here, and a version with a Perspex case included, for more details on this version click here.
Click here to find out more about Autodesk.
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.
This kit is designed and manufactured in the UK by Kitronik.
- PCB Length: 45.5mm.
- PCB Width: 35.5mm.
- Voltage Nominal: 9V.
- Voltage Range: 4 - 12V (Absolute Maximum 15V).
- Typical Standby Current: 4mA.
- Current Max at Nominal Voltage: 70mA.
Jeff Draisey, head of D&T at the Balcarass School in Cheltenham, sent us these Year 8 70's themed Mono Amplifier Projects. We think you'll agree the students not only did a great job with the research, but produced some excellent looking results too!
James Ratcliffe, Director of Design & Technology at Milton Abbey School sent us these great examples of Year 10 work based around our MP3 Mono Amplifier Kit.
This week we have a guest post brought to you by Phil Wickham of Dixons Trinity Academy, whose class have made some concrete speakers using our PIC Controlled Mono Amp Kit.
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!
Mono Amplifier Kit examples sent in by James Ratcliffe at the Milton Abbey School in Dorset.
MP3 Mono Amplifier Kit by year 10 Product Design students at Barry Comprehensive School.
MP3 Mono Amplifiers by year 9 students at Meole Brace School.
Amplifier cases designed by students at Archbishop Sentamu Academy.
Amplifier designs by Mr Peachey's students at St Mary's Catholic High School Astley, Manchester.
Mono Amplifier Kit with light by a student at Rickmansworth School.
Mono Amplifier Training Aid by Eggar's School.
'Secret Amplifiers' by year 8 students at Sir Robert Pattinson Academy.
Mono Amplifier Designs by year 9 students at Humphry Davy School.
MP3 Amplifiers designed by year 9 students at Ibstock Community College.
A range of Mono Amplifier designs by students at Meadows Community School, Chesterfield.
MP3 Mono Amplifier Project Kit demo and explanation video.
This resource has been produced to provide a great way for you to create cases for our very popular MP3 Mono Amplifier V2.0 Kit and our High Power Stereo Amplifier Kit.
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.
Learn how to connect a PSU to your Kitronik Mono Amplifier Kit in our easy to follow tutorial.
Does the polarity matter on the speaker because the speaker is polarised but the PCB doesn't show it
Posted byon Monday, 20 February 2017
Hi Brandon, On the Mono amp kit it doesn’t matter which way round the speaker is connected even though the speaker does show a positive and negative connection.
Therefore we must have to old version. V1.2 on board. It has six capacitors and three resistors. the resistors are not the same as the factsheet you directed me to. have you got the old one? have we been sent the old chips? Thanks/
Posted byon Thursday, 22 September 2016
Hi Carl, if you have 6 capacitors then it should be version 1, the build instructions for this are found here, https://www.kitronik.co.uk/pdf/2115_mono_amp_essentials_2_1.pdf. The chips would have been supplied at the time of the kit being ordered, https://www.kitronik.co.uk/2936-tba820m-audio-amplifier-ic.html this is the chip and it should state TBA820M or text very similar. We haven’t had stock of this old version of the mono kit since late 2014.
What are the functions
Posted byon Tuesday, 20 September 2016
Hi, The function is to amplifier an MP3 player our similar, and you can create a design to house the circuit in such as what can be viewed in the ‘Media’ tag in the following link, https://www.kitronik.co.uk/2154-mp3-mono-amplifier-v20.html
Who is it made for and why (age appropriate for).
Posted byon Wednesday, 14 September 2016
Hi Malaika, The mono amplifier is aimed at key stage 3 and above, so approximately aged 11 upwards. However if the child is competent then there isn’t a reason why a younger person couldn’t make this kit (with supervision). We aim to have a range of kits suitable for different age groups, because of the number of components and the slightly more difficult build than other kits and as such the kit falls into the intermediate range of kits.
We use the Mono amplifier kit. It seems the batch we currently have is a different PCB with slightly more components. Therefore the instruction sheets on your website are incorrect for this board. The pcb says v1.2 on it. Are there instruction sheets for this one? Why are there two versions? Thanks.
Posted byon Monday, 12 September 2016
Hi Carl, The reason for the change is that the chip used on the old mono amp kit (2115) became obsolete, as such a new chip was sourced but this required a slightly different board design. As such we moved from the old version to the new version in the 2014/2015 catalogue (code 2154). Please be aware that any of the old amplifier chips won’t work in this new build. The build instructions for the new version can be found here, https://www.kitronik.co.uk/pdf/2154_mono_amp_essentials_2_2.pdf
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