Contact Us

...about building a new Custom Amplifier


We perform all repairs through The Minor Chord Music Outfitters, an independent music store in Littleton, MA. Bring your amp to their retail store at 80 King Street, Littleton, MA. They will charge a Bench Fee that covers one hour of labor. We will call you with an estimate if there will be significant additional charges.

If you have a question that is not answered on this site, please feel free to contact us at


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Hamilton-Kolby Custom Electronics
Acton, Massachusetts, USA

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