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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
  • Hoppe's Brain Adcom GFA-535 MK1 Power Supply Board Adcom GFA-535 MK1 Power Supply Kit $140.00
  • Adcom GFA-565 Replacement Circuit Board $80.00 – $380.00

Recent Posts

  • New and improved power supply kits for the GFA-555!
  • Hoppe’s Brain is no longer accepting repair or refurbishing clients. Sorry! It’s only DIY Circuit Board Kits from now on.
  • Hoppe’s Brain Coronavirus Pandemic Statement.
  • New Product: “Capacitor Hats” for large screw-terminal electrolytic capacitors.
  • **SOLD** Pair of fully restored ADCOM GFA-565 Monoblock amplifiers $2600

Product categories

  • Adcom (6)
  • Amplifier Parts (6)
  • Circuit Boards (5)
  • Power Supply Kits (3)

Recent Comments

brettbashore on A Tour of a Hoppe’s Brai…
Frank Fisher on Hoppe’s Brain Coronaviru…
hoppesbrain on Yet another variation of the A…
Nelson Pass on Yet another variation of the A…
Edward Verlie on GFA-555 MK1 “VERTICAL…

Archives

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Categories

  • Adcom
  • forsale
  • Refurbished
  • Uncategorized

Recent Posts

  • New and improved power supply kits for the GFA-555!
  • Hoppe’s Brain is no longer accepting repair or refurbishing clients. Sorry! It’s only DIY Circuit Board Kits from now on.
  • Hoppe’s Brain Coronavirus Pandemic Statement.
  • New Product: “Capacitor Hats” for large screw-terminal electrolytic capacitors.
  • **SOLD** Pair of fully restored ADCOM GFA-565 Monoblock amplifiers $2600

Recent Comments

brettbashore on A Tour of a Hoppe’s Brai…
Frank Fisher on Hoppe’s Brain Coronaviru…
hoppesbrain on Yet another variation of the A…
Nelson Pass on Yet another variation of the A…
Edward Verlie on GFA-555 MK1 “VERTICAL…

Archives

  • August 2020
  • July 2020
  • March 2020
  • February 2020
  • January 2020
  • November 2019
  • September 2019
  • August 2019
  • June 2019
  • April 2019
  • February 2019
  • January 2019
  • October 2018
  • September 2018
  • May 2018
  • February 2018
  • December 2017
  • November 2017
  • August 2017
  • June 2017
  • May 2017
  • March 2017
  • February 2017
  • November 2016
  • July 2016
  • June 2016
  • May 2016
  • March 2016
  • February 2016
  • January 2016
  • October 2015
  • September 2015
  • August 2015
  • July 2015
  • June 2015

Categories

  • Adcom
  • forsale
  • Refurbished
  • Uncategorized
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