This is a listing for one
Metal Marshmallow Roaster contact mic preamplifier plus one
Metal Marshmallow Morsel contact mic sensor. The sensor and preamplifier are designed to be used together and neither is a complete microphone by itself. They can be purchased individually in product pages linked above, where there is more information, specs, and operating instructions. If you plan on buying both, it will be slightly cheaper to buy them together using this listing.
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