Audio Kits

Audio amplifiers, pre amps and other things.

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  1. 400W Bridged Mono 200W Stereo Amplifier Kit
    $99.95
    SKU: K4005B

    Velleman 400W Mono / 200W Stereo Power Amp Kit.

    Please note: This kit is on sale due the age of the electrolytic capacitors. We recommend using fresh caps when building this kit.

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  2. 50 Watt Power Amplifier Kit
    $19.95
    SKU: FK660

    50 Watt Mono OCL Power Amplifier Kit 1% Resistors. Class AB circuit, 1V. input sensitivity and 15 K input resistance. Learn More
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  3. 50 Watt Stereo Power Amp Kit
    $34.95
    SKU: FK661

    50 Watt OCL R1% Power Amplifier Kit. Class AB circuit, 1V pp input. Learn More
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  4. 6 - 10 Watt Stereo Amplifier Kit
    $12.95
    SKU: QK143

    Very low THD (0.018%) using this TDA2005 as a stereo amplifier module. Direct earth to solder lug on the IC. Small single-sided PCB. Dual log potentiometer on the input. Power supply 8 - 18VDC providing 2A for best results. Learn More
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  5. 8 W Power Amplifier Kit
    $8.95
    SKU: FK1301


    The power amplifier circuit uses IC Power Amp No. TDA2030, an OTL operation.
    This circuit is able to amplify signal from the OTP IC voice circuit. Learn More
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  6. 8 Watt Audio Amplifier Kit
    $13.95
    SKU: QK47

    High power audio amplifier kit using TDA2002, but with a low supply voltage. Proven IC and circuit design. Heatsink supplied as well as all components! 5V - 20V DC supply voltage. Up to 11W output! Learn More
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  7. 8 Watt Power Amplifier Kit (Stereo)
    $11.95
    SKU: FK605

    A stereo 8 watt line amplifier kit that uses an IC, and provides 8 watts to each channel!

    To order assembled version click here: FA605 Learn More

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  8. Announcer Chime Kit
    $6.95
    SKU: FK920

    Just like on an airplane, a chime is sounded to get your attention. Learn More
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  9. Anti Speaker Plop kit for K3503
    $8.95
    SKU: K3506

    Also provides protection for the MOSFET Learn More
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  10. Class AB Amp kit
    $15.50
    SKU: QK48

    Learn the basic topics of audio power amplification. Boot strapping, crossover distortion, complementary pairs, push-pull. Learn More
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  11. Condenser Microphone Kit with Pre-Amp
    $3.50
    SKU: FK648

    This kit is a small circuit with an on-board condenser mic and preamp. Learn More
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  12. DC Protection for Loudspeaker kit
    $9.95
    SKU: K4701

    DC protection kit for loudspeaker has in-line speaker protector. Learn More
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  13. Digital Voice Recorder Kit (20 - 60 sec)
    $21.95
    SKU: FK941

    Digital Voice Recorder Kit (20 - 60 sec)


    Assembly required Learn More

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  14. Discrete Power Amplifier Kit 200W
    $26.95
    SKU: K8060


    Assembly Required Assembled version: VM100 Learn More
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  15. Dual Station Intercom & Door Bell Kit
    $11.95
    SKU: FK326

    This intercom kit is a mini communication tool, well known to be used at home, with a microphone which is connected to a loudspeaker to another room.

    While Stocks Last

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  16. Dual Station Intercom Kit
    $8.95
    SKU: FK313

    Dual Station Intercom kit with 2 speakers.


    Assembly Required
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  17. Dynamic Microphone Preamplifier Kit
    $3.75
    SKU: FK647

    A simple circuit that preamplifies a microphone signal. Learn More
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  18. Electronic Stereo Volume Control
    $12.95
    SKU: MK163

    Use IR to remotely control your line level signal. Ideal for stereo setups, or PC to stereo. Learn More
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  19. Extended Record / Playback Kit
    $41.95
    SKU: K8094

    The K8094 kit allows you to record and play messages of up to 8 minutes long.


    Assembly required Learn More

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  20. Full Distortion Effect Guitar Pedal Kit
    $89.95
    SKU: K8113

    The FUZZ Box!

    Analog Guitar Effect Pedal Kit

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