Hoppe’s Shop
DIY circuit board kits for audio hobbyists
Showing all 9 results
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Adcom GFA-555 MK1 Input Board
$80.00 – $220.00 Select options -
Adcom GFA-565 Replacement Circuit Board (New Version)
$80.00 – $380.00 Select options -
Adcom GFA-535 MK1 Power Supply Kit
$140.00 Add to cart -
Adcom GFA-555 MK1 and MK2 Soft-Start Power Supply Upgrade Kit
$350.00 Add to cart -
Adcom GFA-585 Replacement circuit boards. (Pair)
$160.00 – $760.00 Select options -
Universal Amplifier Soft-Start Power Supply Board
$120.00 Select options -
Adcom GFA-545 MK1 & MK2 Power Supply Kit
$150.00 Add to cart -
Adcom GFA-535 MK2 Power Supply Kit
$140.00 Add to cart -
Matched input transistors, 2 pairs
$30.00 Add to cart