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  • 3 power rails. (2 positive and 1 negative @ 3 Amp each)
  • 20000uF (10000uF per +/-rail) Super smoothing cap bank.
  • LM350 regulators for +V/-V rails
  • TL783 or LM317 regulator for 48V rail
  • 48V rails have own transformer on board
  • +/-V1 3V to 30V depending on Transformator
  • PE and GND connections
  • PCB measurements 140mm x 80mm
  • Connectors for cables up to 2,5mm²
  • Full Kit includes Triad FS48_125


The VPR + TRAFO can be configured by using a 2x15/18Vac transformer with 100VA capacity to provide +16Vdc and -16Vdc.  We highly recommend a TRIAD VPT30-3330. This configuration enables the powering of a full rack with up to 11 effects in a 500. With its versatile compatibility, the VPR + TRAFO offers flexible options for powering various combinations of equipment within the 500 series.


Build Docs and schematics

All our Build Guides


PriceFrom €17.99
Excluding Sales Tax
    • Shipping will be calculated depending on your location
    • Standard Shipping with DHL
    • UPS Express Saver as Option in Checkout
    • Free Standard Shipping in Europe on orders over 100€

    Return of untouched Original Products is possible during a time of 14 days after receiving your article, check our Return Policy

  • Introducing our VPR + TRAFO, the perfect addition to your DIY audio electronics projects. This versatile power supply is designed to deliver stable and reliable voltage to your circuit, ensuring optimal performance and sound quality. With its compact size and easy-to-use design, it's the ideal choice for audio enthusiasts and DIYers alike. Whether you're building a new amp, preamp, or DAC, our single VPR is the perfect choice for your next project. So why wait? Order now and experience the power of high-quality audio electronics

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