This year's Def Con entry badge was a working sampler keyboard, it even has a built-in puzzle that requires specific note inputs and linking with other badges. : r/synthesizers
Korg microSampler Sampling Keyboard | zZounds
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A History of Roland Samplers - Roland Articles
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Korg microSAMPLER Sampling Keyboard - YouTube
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Korg microSAMPLER Sampling Keyboard - YouTube
Used Korg MS-1 MICROSAMPLER SAMPLING KEYBOARD W/PS Synthesizers 49-Key Synthesizers