Harman/Kardon 330B speaker terminal upgrade kit


One kit will upgrade the outputs for one pair of speakers. The Harman/Kardon 330B has two speaker outputs. Please order this number of kits if you would like to convert all speaker outputs.


These kits allow you to convert your Harman/Kardon to use modern terminals. The original terminals were designed for bare wire connections. These kits will allow the use of bare wire, banana plugs, spade connectors, pin connectors, etc. Each kit includes an adapter panel, terminals, and detailed instructions. The conversion requires no modification of the chassis and is reversible. The adapter plates key into the existing panel opening, and are very secure when installed, requiring no additional hardware.


You will need basic soldering skills to install this conversion kit. If you are not confident working with electronics please consider having an electronics technician perform the conversion.


There are two kit styles available:




Please feel free to reach out with questions. I design (CAD) and produce (3D print) these kits at home. I am here to offer help, and appreciate feedback. If you have equipment that I don't currently offer a kit for please message me. I am interested in developing new products.