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Hoppe's Brain

DIY circuit board kits for Adcom and DIY Amplifiers

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Circuit Boards

Showing all 5 results

  • “Capacitor Hats” for Large Aluminum Electrolytic Capacitors

    $25.00     Select options

  • Adcom GFA-555 MK1 Input Board

    $80.00 – $360.00     Select options

  • Adcom GFA-565 Replacement Circuit Board

    $80.00 – $380.00     Select options

  • Adcom GFA-545 MK1 & MK2 Power Supply Kit

    $150.00     Add to cart
  • Adcom GFA-535 II Power Supply

    Adcom GFA-535 MK2 Power Supply Kit

    $140.00     Add to cart
* Not affiliated with ADCOM corporation, past or present.

Featured Products

  • BFA-555 Smart Soft-Start Power Supply for the Adcom GFA-555 $220.00 – $340.00
  • Adcom GFA-555 MK1 Input Board $80.00 – $360.00
  • Matched input transistors, 2 pairs KSC1845 $30.00
  • Adcom GFA-535 MK1 Power Supply Kit $140.00
  • Adcom GFA-565 Replacement Circuit Board $80.00 – $380.00

Recent Posts

  • New Product! Binding Post Adapters for 3/4″ binding posts.
  • New product! Cable assemblies for GFA-585.
  • Adcom FAQ is up!
  • Finally! I’ve written better documentation for the GFA-535 MK1 Power supply boards.
  • New and improved power supply kits for the GFA-555!

Product categories

  • Adcom (7)
  • Amplifier Parts (7)
  • Circuit Boards (5)
  • Power Supply Kits (3)

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Johnie Smith on ADCOM GFP-750 upgrade
brettbashore on A Tour of a Hoppe’s Brai…
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Categories

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Recent Posts

  • New Product! Binding Post Adapters for 3/4″ binding posts.
  • New product! Cable assemblies for GFA-585.
  • Adcom FAQ is up!
  • Finally! I’ve written better documentation for the GFA-535 MK1 Power supply boards.
  • New and improved power supply kits for the GFA-555!

Recent Comments

John Acosta on Hoppe’s Brain is no long…
Johnie Smith on ADCOM GFP-750 upgrade
brettbashore on A Tour of a Hoppe’s Brai…
Frank Fisher on Hoppe’s Brain Coronaviru…
hoppesbrain on Yet another variation of the A…

Archives

  • June 2021
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Categories

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