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  • Universal Power Supply

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

    The all new Universal PSU V3.0. Bigger and badder than ever, complete with a well illustrated build guide. Fully compatible and optimized for the ...

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  • Soft Start & Speaker Turn-On Delay / DC Protector Combo

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

    This pack includes one Soft Start Board and one Speaker Turn-On Delay and DC protector board.  They are not available for purchase separately. Soft...

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  • Super Regulator

    Original price $ 19.00 - Original price $ 19.00
    Original price
    $ 19.00
    $ 19.00 - $ 19.00
    Current price $ 19.00
    10+ in stock

    You want to build a preamp, a DAC, a phono stage, anything that needs a nominal supply voltage between 3.3V and 18V or even more, positive and/or ...

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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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  • Linear Audio High-voltage Delay for Tube Amplifiers V4

    Original price $ 49.00 - Original price $ 49.00
    Original price
    $ 49.00
    $ 49.00 - $ 49.00
    Current price $ 49.00
    10+ in stock

    This high voltage delay for tube amplifiers was designed by Jan Didden of Linear Audio and published in the October 2019 issue of audioXpress. Why ...

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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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  • 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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  • 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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