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Breathe new life into your older malletKAT by adding an internal GS Audio Card.

Retrofits are performed in our factory, and will require the malletKAT owner to ship their controller to us. Please read the complete description on the product page before ordering.


Alternate Mode is excited to announce our malletKAT GS sounds in an external sound module, the gigKAT GS

The GS9 firmware chip is included, and can be easily installed at home to take advantage of the additional performance features available in the gigKAT GS. The firmware chip is only compatible with version 4.0 or higher. Older versions require a hardware board upgrade. Please include your malletKAT's serial number so that we send you the correct firmware chip.

There is currently a 3 week lead time

9V power supply for the GIGKAT 2 and GIGKAT GS sound modules
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