ATTENTION: Due to a recent change in the design of the Proto-Sound 3 Stacker Boards you MAY need to use an updated Chain Code File. Please reference the photos below to identify which Stacker Board you have. Click on the link underneath the images that show the Stacker Board you are working with.
Revision E Stacker Board
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*Note the location of the audio amplifier on the Revision E Stacker Board
Revision F Stacker Board
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*Note the red sticker on the Revision F Stacker Board
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