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Hoppe's Brain

DIY circuit board kits for Adcom and DIY Amplifiers

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* 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)

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…

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Categories

  • Adcom
  • forsale
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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
  • January 2021
  • August 2020
  • July 2020
  • March 2020
  • February 2020
  • January 2020
  • November 2019
  • September 2019
  • August 2019
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  • January 2016
  • October 2015
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Categories

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