Audio Kits

Audio amplifiers, pre amps and other things.

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  1. Power Amplifier Kit OTL 30W (Mono) R1%
    $10.95
    SKU: FK656

    Amplifies a mono signal to 30 watts using 1% metal film resistors. This OTL circuit is without tone control. Learn More
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  2. Preamplifier Kit
    $12.50
    SKU: QK98

    A pre-amplifier to use with an electret mic or other microphone to boost the signal before feeding into an amplifier. Learn More
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  3. Speaker Protection Kit - Mono
    $4.95
    SKU: FK649

    If your OCL amp has no protection circuit, you could potentially fry your speaker, unless you use something like this speaker protection kit.

     

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  4. Stereo Bass Booster Kit
    $8.95
    SKU: FK643

    This is a stereo bass booster circuit that will provide you with high quality sound at a very low cost. It requires 12V Power Supply. Learn More
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  5. Stereo Headphone Amplifier Kit
    $7.95
    SKU: FK676

    Head phone Amplifier Kit Learn More
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  6. Stereo Loudness Control Kit
    $6.95
    SKU: FK654

    This loudness circuit uses a 3 stage filter and a simple one transistor amplifier to increases bass and tweeter frequencies. Learn More
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  7. Stereo RIAA correction amplifier Kit
    SKU: K2573

    RIAA stereo pre-amplifier kit for md pick-ups. Low noise Learn More
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  8. Stereo Simulator Kit (Mono In/Stereo Out)
    $9.95
    SKU: FK651

    This circuit simulates stereo by taking a mono signal, and separating certain frequencies to each channel. Learn More
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  9. Stereo Tone Control Kit
    $12.95
    SKU: FK626

    This tone control (stereo) kit is a multifunctional tone controller.

    If you need the assembled version, please order here FA626 Learn More

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  10. Stereo VU Meter kit 2 x 15 LEDs
    $46.95
    SKU: K4306

    This stereo VU Meter kit has a Scale from -23dB to +5dB Learn More
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  11. Sub Woofer Amplifier kit (48W OCL)
    $19.95
    SKU: FK671


    This sub woofer kit amplifies 25 to 200Hz frequency range!
    Great for subwoofer experimentation. Learn More
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  12. Super Mono Tone Control Kit
    $10.95
    SKU: FK627


    This is a super mono tone control kit.
    Treble, Bass and Volume adjustment. Learn More
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  13. Super Stereo Ear Kit
    $12.95
    SKU: MK136

    Stereo audio amplifier boosts sound 50 times Learn More
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  14. Super Stereo Tone Control Kit
    $16.95
    SKU: FK628

    This super stereo tone control kit needs 15-0-15V power supply which is suitable for connecting with OCL amplifier only. Learn More
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  15. TDA7052 1 Watt Amplifier Kit
    $7.95
    SKU: QK27

    This is a 1 watt mono amplifier kit using the TDA 7052 from Philips. Learn More
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  16. The Tremor! Guitar Effect Pedal Kit
    $64.95
    SKU: K8110

    Optical Tremolo

    Build your own analog effect pedal and tweak it to your needs.

    Learn More
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  17. Two Tone Signal Generator Kit
    $2.95
    SKU: FK903

    Signal generator kit, two tone. Learn More
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