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  • B1 with Korg Triode (B1K) Full Kit

    Original price $ 299.00 - Original price $ 299.00
    Original price
    $ 299.00
    $ 299.00 - $ 299.00
    Current price $ 299.00
    10+ in stock

    At the Burning Amp Festival in 2017 Nelson presented a pre-amp using the Korg Nutube dual triode. The latest revision of the circuit available is n...

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  • WHAMMY Headphone Amplifier Full Kit

    Original price $ 299.00 - Original price $ 299.00
    Original price
    $ 299.00
    $ 299.00 - $ 299.00
    Current price $ 299.00
    10+ in stock

    The WHAMMY Class-A headphone amplifier Wayne Colburn, the genius at Pass Labs who for the last 25 years has designed essentially all the things ...

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  • B1 with Korg Triode (B1K) Preamplifier PCB + Fairchild JFETs

    Original price $ 25.00 - Original price $ 25.00
    Original price $ 25.00
    $ 25.00
    $ 25.00 - $ 25.00
    Current price $ 25.00
    10+ in stock

    At Burning Amp Festival 2017 Nelson presented a version of a pre-amp using the Korg Nutube dual triode. We now have the latest version of this circ...

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  • SMPS DC Filter P089ZB Kit

    Original price $ 14.00 - Original price $ 14.00
    Original price
    $ 14.00
    $ 14.00 - $ 14.00
    Current price $ 14.00
    10+ in stock

    The PO89ZB, an inline DC filter for SMPS wall warts, preamps, HPAs, Korg NuTubes, B1, etc.   This filter is limited to single rail 48V DC, 3A appli...

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  • ACP+ (Amp Camp Pre-Amp + Headphone Amp)

    Original price $ 20.00 - Original price $ 240.00
    Original price
    $ 20.00 - $ 240.00
    $ 20.00 - $ 240.00
    Current price $ 20.00
    Only 10 left!

    This is the ACP+ (Amp Camp Pre-Amp + Headphone Amp) PCB, as built at Burning Amp Festival in 2019. PCBs ($25) The pre-amp PCB along with the ground...

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  • DIY Biamp 6-24 Crossover

    Original price $ 33.00 - Original price $ 33.00
    Original price
    $ 33.00
    $ 33.00 - $ 33.00
    Current price $ 33.00
    Out of stock

    The DIY BIAMP 6-24 kit is a stereo analog active biamp crossover circuit designed for high flexibility. Featuring 12 discrete Jfet buffer circuits...

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  • Amp Camp Amp

    Original price $ 327.00 - Original price $ 359.00
    Original price $ 327.00
    $ 359.00
    $ 359.00 - $ 359.00
    Current price $ 359.00
    Out of stock

    Updates  After a long wait, the new and improved version of the ACA, the ACA V1.8, is now in stock. Stuff you'll want to know about: V1.8 wirin...

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  • ACA Mini Essentials Kit

    Original price $ 25.00 - Original price $ 25.00
    Original price
    $ 25.00
    $ 25.00 - $ 25.00
    Current price $ 25.00
    10+ in stock

    This is the ACA Mini "Essentials" Kit, which provides the bare essentials you would need to get started with the project.  Learn more and discuss t...

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  • Starving Student II Headphone Amplifier

    Original price $ 0.00 - Original price $ 0.00
    Original price $ 0.00
    $ 289.00
    $ 289.00 - $ 289.00
    Current price $ 289.00
    10+ in stock

    We're happy to announce the immediate availability of this new collaboration between Pete Millett and diyAudio, an updated version of the classic...

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  • Aleph J MOSFET and JFET kit

    Original price $ 60.00 - Original price $ 60.00
    Original price
    $ 60.00
    $ 60.00 - $ 60.00
    Current price $ 60.00
    Only 7 left!

    Included in this kit are the following semiconductors needed to complete an Aleph J amplifier. This kit provides for 2 channels (one stereo amplifi...

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  • DIY Front End 2022 Essentials Kit

    Original price $ 20.00 - Original price $ 20.00
    Original price
    $ 20.00
    $ 20.00 - $ 20.00
    Current price $ 20.00
    Out of stock

    Among the appreciations of DIYers is stuff that works simply, well, and cheap, not necessarily in that order.  This project is an effort to as...

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  • H2 Harmonic Generator

    Original price $ 8.00 - Original price $ 8.00
    Original price
    $ 8.00
    $ 8.00 - $ 8.00
    Current price $ 8.00
    10+ in stock

    This is Nelson's DIY H2 Harmonic Generator, Version 2. This kit consists of one PCB and two selected J113 JFETs, good for stereo operation.  You ca...

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  • Analog Crossover Network: LX Mini XO Kit

    Original price $ 99.00 - Original price $ 99.00
    Original price
    $ 99.00
    $ 99.00 - $ 99.00
    Current price $ 99.00
    10+ in stock

    This is the Analog Crossover Network: LX Mini XO Kit. To purchase a complete kit or learn more about what the ACN can do for you visit the ACN Comp...

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  • ACA Mini Completion Kit

    Original price $ 110.00 - Original price $ 110.00
    Original price
    $ 110.00
    $ 110.00 - $ 110.00
    Current price $ 110.00
    10+ in stock

    This is the ACA Mini "Completion" kit, which provides a number of parts needed to complete the ACA Mini project. It does not include the PCB or act...

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  • Iron Pre

    Original price $ 150.00 - Original price $ 175.00
    Original price
    $ 150.00 - $ 175.00
    $ 150.00 - $ 175.00
    Current price $ 150.00
    Out of stock

    The Iron Pre Completion Kit is over here. This is the Iron Pre from Zen Mod - limited quantities and hot off the press. There are two versions of t...

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  • Equalizer for Full Range Speakers

    Original price $ 10.00 - Original price $ 10.00
    Original price
    $ 10.00
    $ 10.00 - $ 10.00
    Current price $ 10.00
    10+ in stock

    An equalizer for full range speakers that addresses the common need for a bit of of a bump in the bottom end and a dip in the top. "Most of the ti...

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  • Linear Audio Silent Switcher V3

    Original price $ 0.00 - Original price $ 0.00
    Original price $ 0.00
    $ 69.00 - $ 129.00
    $ 69.00 - $ 129.00
    Current price $ 69.00
    Out of stock

    Your projects need a low voltage power supply. Very low noise. No hum, no mains pops. Efficient and portable. Enter the SilentSwitcher by Linear Au...

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  • Analog Crossover Network: Basic Kit

    Original price $ 33.00 - Original price $ 33.00
    Original price
    $ 33.00
    $ 33.00 - $ 33.00
    Current price $ 33.00
    10+ in stock

    This is the Analog Crossover Network: Basic Kit. To purchase a complete kit or learn more about what the ACN can do for you visit ACN Complete Kit...

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  • Noir Pre & Headphone Amplifier

    Original price $ 29.00 - Original price $ 69.00
    Original price
    $ 29.00 - $ 69.00
    $ 29.00 - $ 69.00
    Current price $ 29.00
    10+ in stock

    Noir is a unique low cost headphone amplifier project, comprised of three circuit boards. The entire Noir BOM is purchasable from Mouser in a singl...

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  • Scourge, Bulwark, Marauder and Dreadnaught VFET Front Ends

    Original price $ 109.00 - Original price $ 149.00
    Original price $ 109.00 - Original price $ 149.00
    Original price $ 115.00
    $ 80.00 - $ 109.00
    $ 80.00 - $ 109.00
    Current price $ 80.00
    Only 3 left!

    Complete kits for Mark Johnson's VFET front ends. These are suitable for both the N and P VFET kits and will also drive other projects that are pla...

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  • Amp Camp Amp Parts Kit Only

    Original price $ 135.00 - Original price $ 135.00
    Original price
    $ 135.00
    $ 135.00 - $ 135.00
    Current price $ 135.00
    10+ in stock

    The Amp Camp Parts Kit includes everything you need to build the Amp Camp Amp except the recommended power supply and a chassis. You can also buy t...

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  • Pearl 3 Phono Preamplifier

    Original price $ 150.00 - Original price $ 150.00
    Original price
    $ 150.00
    $ 150.00 - $ 150.00
    Current price $ 150.00
    Out of stock

    LIMIT 1 PER CUSTOMER PER MONTH This is the pioneer kit for Wayne Colburn’s new phono stage, Pearl 3.  This includes all of the parts for the RIAA P...

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  • Linear Audio T-reg V5

    Original price $ 69.00 - Original price $ 69.00
    Original price
    $ 69.00
    $ 69.00 - $ 69.00
    Current price $ 69.00
    10+ in stock

    A high-voltage, low noise, fully protected regulator for tube circuits T-reg is a high voltage regulator aimed at tube-level high voltage amplifier...

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  • Nelson's PSU Filter Relay Essentials 2022

    Original price $ 13.00 - Original price $ 13.00
    Original price
    $ 13.00
    $ 13.00 - $ 13.00
    Current price $ 13.00
    10+ in stock

    "About a year and a half ago I released a power supply filter board and thump suppression relay circuit to go with the DIY Sony N channel VF...

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