Version 2 of our Mono Amplifier Kit can be used with any personal stereo equipment, including MP3 players.
It uses an LM386 audio amplifier IC which can output 1.25W of power.
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 V2.0.
- 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.
- 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 blister retail packaging. It is also available in a simple grip seal bag and bulk quantities 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 1054.
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!
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 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.
Mono Amplifiers designed by 6th form students as part of their A Level Product Design course at Audenshaw School.
Amplifier case designs by students at Litcham High School.
Plywood 'Bass Box' designed by students at Hardenhuish High.
Laser Cut MDF MP3 Amplifier designed by students at Meole Brace School.
MP3 Mono Amplifier Project Kit demo and explanation video.
A video of us comparing our Amplifier Kits taken from our Ask Kitronik Live event 2012.
Hi Can this kit be used instead of the DIY Speaker Kit required on the Micro:bit air guitar?
Posted byon Wednesday, 1 February 2017
Hi, Unfortunately as this isn’t a kit that we have developed we can’t confirm if this amp kit would be suitable. You would need to find out what amplifier is used in that kit and then find one that is equvilent.
Hi would it be possible to connect the power supply to a light sensitive sensor that when covered plays the tracks from the mp3? Also would it be possible to connect headphones rather than the speaker? This for an exhibition piece I would like to create but i'm not overly gifted in the electrical/technical side of things yet.. Cheers Em
Posted byon Monday, 23 January 2017
Hi Emily, The easiest way to do this is to connect the power to the following kit, https://www.kitronik.co.uk/2112-light-activated-switch.html then connect the output of this kit to the power of the mono amp kit. This would then mean when it went dark or light (depending on how you connected it) the mono amp would then be on. You could also connect headphones to the amp kit but you would need to ensure impedance rating is 8ohms or higher.
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