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Mindsets Mono Pre-amplifier Solder Kit


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About this product


  • Amplify a weak input signal from a microphone or another audio device
  • Boost your audio to increase sound or go into an amplifier
  • Fun and easy to solder with 13 parts

Product overview

• Amplify a weak input signal from a microphone or another audio device
• Boost your audio to increase sound or go into an amplifier
• Fun and easy to solder with 13 parts
• Requires a 3-25V power supply (not included)

What can I do with this kit?
Boost your audio input with this mono pre-amp and transform a weak input to a line level output suitable for amplifiers or subwoofers. The mono pre-amplifier amplifies a single channel, ideal for mono equipment such as microphones and guitars. With a compact 42mm x 22mm board, you can fit this pre-amp in almost anywhere. With 13 parts to solder, this is a great kit for any ability level.

What can I learn from this kit?
Learn how circuits go together and practice your soldering with this pre-amp. The kit uses resistors, capacitors, a microchip and a potentiometer to amplify an input signal without changing its pattern. The amount the signal is amplified by depends on the signal and the power that the kits is run off. This kit requires a soldering iron and solder, and may require wire cutters.

How easy is this kit to solder?
This is a great kit for those looking improve their sound system and those just starting to learn about what electronics can do. Once you’ve put the kit together, you may want to add an enclosure (not included) to protect your circuit or add an input and output jack to make it easy to connect to. This kit can run off a 3-25V power supply (not included).

Rated 4 out of 5 by from As per description Arrived promptly with collection from shop. Thanks to the team for being patient with my arrival 2 minutes for the shop to close!
Date published: 2017-11-07
Rated 5 out of 5 by from Very good quality Easy to build and worked first time. Used as a microphone pre-amp to boost it to "line" level for a mixing desk.
Date published: 2016-08-29
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Can you make this into a guitar amplifier with distortion ?

Asked by: Jhewit2013
As much as we would love to be able to help here, we cannot offer design project advice or assistance, we are more than happy to locate products and support you with your purchases but we are not able to design entire circuits or projects for you. If you do have the design/circuit information detailing the value of the components needed we will be happy to locate these for you.
Answered by: Dominic
Date published: 2017-10-09

What impedance speaker should be connected to this item ? and what is the supply voltage ?

Asked by: Mad Sparky
The input of the device is DC 3 V - 25 V however as this is a build your self kit you would need to select your own speakers.
Answered by: Billy
Date published: 2017-05-27

What is the input impedance? (The Op-Amp Number is sufficient, I can look it up.)

Asked by: John S
The Op-Amp used in this kit is an LM358SN.
Answered by: Gareth
Date published: 2017-03-23

Could i ampliy a signal from a dac with low output?

Asked by: John
Unfortunately we are unable to guarantee full compatibility for this item.
Answered by: Dominic
Date published: 2017-02-28

hi could this preamp accept a signal from a crystal set with very low output say 2ma and can you suggest an amp kit to use with this preamp 2w say. regards

Asked by: rolo
This service is for frequently asked questions and does not allow two way communication, In order for us to best assist you with your technical issue please contact us on the details below: 0333 400 9757 or email technical@maplin.co.uk
Answered by: Dominic
Date published: 2016-03-01

Is this product suitable to drive the speaker under prod no.L67AW? Is the 10k pot in the kit log or lin?

Asked by: chris
No, this is a pre-amp used to change line level of mics before a amplifier, which would then drive the speaker.
Answered by: Russell
Date published: 2015-10-20

I want to use it for a piezo pickup input. A previous answer says this is supported. However, what is the input impedance of the circuit? Is there a spec sheet?

Asked by: Santokh
A data sheet can be found at the link below.
Answered by: Dominic
Date published: 2015-09-15

Other than probably requiring solder and iron, what components can you suggest I order to connect a suitable battery to this unit. Also, which type of battery would be best. Thanks

Asked by: A Moose
It is important to note that as a retail only company we are unable to assist with any design projects or queries, or advise on specific products that may be required for your purpose.
Answered by: Dominic
Date published: 2017-01-24
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