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Month: February 2017

A custom super-high-current GFA-555 Dual-mono upgrade

Posted on February 15, 2017July 2, 2017 by hoppesbrain

Here’s a custom GFA-555 I built for Mark in Michigan. This is a fully dual-mono conversion with all the tweaks. Each channel has its own, dedicated 500VA transformer, for 1000VA in total, replacing the single, 850VA stock unit.

20170130_164351.jpg
Pretty.

Continue reading A custom super-high-current GFA-555 Dual-mono upgrade

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* Not affiliated with ADCOM corporation, past or present.

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Recent Posts

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  • 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…

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