Haynes Build your Own Loudspeaker Amplifier Kit
This unique kit makes the perfect gift for any music lover with their own MP3 player or smartphone.
Follow the instructions and build a working, amplified speaker complete with 3.5mm lead to connect to a digital music device.
Includes all components and full step-by-step instructions. Construction is completed with no soldering.
Requires one 9 V battery (not included).
This is not a toy. Not suitable for children under 14 years of age.