Casio DM-100
A page that should not exist — because the machine it names does not.
Overview
Here is the problem with the Casio DM-100: it appears to be a phantom. The archive's research pass came back empty — no manufacturer documentation, no period review, no listing, no spec sheet, nothing that confirms Casio ever built a product carrying that name. That is not the same as proof of absence, and collectors know the difference. It simply means that at the time of writing, nobody has put a verifiable document in front of this archive that ties the model number "DM-100" to the Casio name.
The confusion almost certainly traces to a different DM-100 entirely. The Boss DM-100 — a Roland subsidiary product, not a Casio one — was a compact analogue echo and chorus unit built into a metal case with a plastic front panel, finished in black, measuring 13½ × 6½ × 3½ inches and weighing 5½ lb. It sold in the UK for £221.29 excluding VAT, distributed by Roland (UK) Ltd of Middlesex. Period coverage of that unit is detailed and unflattering in places: the echo section was judged average-to-poor for an analogue delay, trailing the similarly priced Yamaha E1005, though the chorus — derived from Roland's long chorus lineage — was considered genuinely good, especially with guitar and keyboards. The unit could produce echo or chorus, but not both at once, and the chorus intensity control sat on the rear panel where it was awkward to reach mid-performance.
None of that belongs to Casio. It belongs to Boss. The DM-100 model number is real and well documented — under a different manufacturer's badge.
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