Web only

Kitronik Stereo Amplifier Prebuilt Kit - 3.5mm Jack Lead

Code: A49RJ

  • Make a great amp with a 3.5mm jack input
  • Create an amp with 1W output per channel and 2 channels
  • Minimal soldering required with 6 parts

Product details

Kitronik Stereo Amplifier Prebuilt Kit - 3.5mm Jack Lead

• Make a great amp with a 3.5mm jack input
• Create an amp with 1W output per channel and 2 channels
• Minimal soldering required with 6 parts
• Requires a 9V battery or 12V power supply (not included)
• Designed and manufactured in the UK by Kitronik

What can I make with this kit?
Play music and listen to your MP3 player with up to 1 watt output per channel and 2 channels in this great amp kit (manufacturer code 2136B-JK). No need to spend time soldering, everything this kit comes with is PCB pre-built. Just plug into a 3.5mm stereo socket (a standard small headphone socket) and listen to your music. This kit requires a DC 2-15V power supply. A single 9V (PP3) battery (not included) or a DC 12V power supply (not included) are recommended.

What is included in this kit?

There’s no need to solder, as the PCB is already pre-built. All you need to connect is the 3.5mm jack lead, speakers and power clip. The kit amplifies the voltage and current of the input signal with the amplifier integral chip (a NJM2073D chip). The signal is then transferred to the speakers which translate it into sound. Minimal soldering is required with this kit – you only need to solder the speakers, jack and battery clip.

How difficult is this to solder?
This is a great kit for those who are not comfortable soldering or want to demonstrate how a speaker works. The kit comes with two 8 ohm 66mm speakers and 3.5mm jack lead. You can build your own enclosure (not included) to protect the electronics and make your own audio system or you could add an on/off switch.
Number of components in the kit? 6 parts
Soldering required Yes
Impedance 8 ohms
Power amplifier output 1W + 1W
Power supply requirements DC 12 V power supply or 1 x 9V PP3 Battery
Board size 58mm x 35mm

what are the diameter of the speakers, only as I have an enclosure idea and want to know if they will fit. hopefully around 6.5cm if not can any one recommend any kits with that size

Asked by: Anonymous
This information is best detailed in the user manual / datasheet which is available from the download tab on the products webpage, if you do need any in-depth Technical support please feel free to give us a call on 0333 400 9500 or email us on
Answered by: Dominic
Date published: 2016-03-14

Can I use a 5v supply and 4ohm speakers? If not, is there a kit that available that is suitable?

Asked by: Rodders
On this occasion Maplin do not stock a product that exactly meets your requirements, or indeed anything close enough to offer you as an alternative.
Answered by: Russell
Date published: 2016-03-06

I need a 5V powered (usb) amp or pre-amp to boost stereo from "headphone" to "line in" level. I have an Astra with line-in only and have to turn the cd audio to 100% to hear it. Would this pre-amp do this with reasonable quality, or what product would? 

Asked by: Kbonovich
Yes, this would be a suitable solution.
Answered by: Russell
Date published: 2015-07-17
  • y_2017, m_5, d_24, h_23CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_3
  • loc_en_GB, sid_A49RJ, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_maplin-en_gb

Bulk Prices

Item code Item name Quantity Price
A49RJ Kitronik Stereo Amplifier Prebuilt Kit - 3.5mm Jack Lead (1+) £13.99

Why not tell us and our B2B sales team about your specific business needs and expectations?

At Maplin, we’re always looking for innovations and technology that can help your business work more efficiently.

With a dedicated business team and special services available only to business customers, you can access our electronics and technology solutions through our wide network of over 200 stores, our website with more than 20,000 products or though your personal account manager over the phone.

Working with organisations for nearly 30 years, Maplin offers a nationwide range of benefits to our business users:

  • 30 day EOM credit account
  • volume discount pricing
  • online and in-store use of account
  • one-to-one account management
  • bespoke product sourcing and branding
  • free delivery on orders over £10
  • scheduled and forward ordering service

Contact our business team on 

0333 400 9740 to open an account or discuss your business needs.

To receive your free copy of the Maplin Catalogue just call 0333 400 9740.


  • Home Delivery
  • Click & Collect