Specialist preservation sources place Checkmate among early Keio-associated rhythm machines from the mid to late 1960s. No manufacturer catalogue, dated announcement, price list or exact-variant record has yet resolved its family identity.
More records in the archive
The machine keeps turning up.
Archive source
Drum Machine Explorer / Internet Archive collection / Keio Checkmate playable sample archive
The Keio Checkmate is preserved as ten playable samples in the Drum Machine Explorer, a small but useful afterlife for an early rhythm-box label whose surviving paper trail is thin.
Read Keio Checkmate sample archive ↗On record
- Drum Machine Explorer / Internet Archive collection — Keio Checkmate playable sample archive. The Keio Checkmate is preserved as ten playable samples in the Drum Machine Explorer, a small but useful afterlife for an early rhythm-box label whose surviving paper trail is thin. Source ↗
Six figures beside the selector
The Checkmate pictured on Sequencer.de prints six rhythm figures, A–F, beside its Rhythm selector. Tempo and SW-VOL knobs run down the right, above Solo and Start-Stop buttons. This visible panel presents a set of choices rather than a step-writing grid. The photograph establishes the CHECKMATE marking on one surviving instrument; it does not establish its factory date or internal circuitry.
The family name needs care
Sequencer.de groups Checkmate with DoncaMatic and Rockmate and assigns a 1966 date. Drummachines.de lists Checkmate Doncamatic but expressly questions the Keio/Korg attribution. HISvoice places the name in the later electronic rhythm-machine family, while the AMAZONA retrospective says Mini Pops 3 appeared under Checkmate and Aria Diamond labels. That Mini Pops description has a different button layout from the pictured A–F selector. These accounts are leads to variant identification, not proof that every Checkmate is one rebadged model.
Keio / Korg Donca Matic, Checkmate and Rockmate ↗ Keio / Korg rhythm-machine index ↗ Z historie bicích automatů ↗ Vintage-Drumcomputer: Korg Minipops, Doncamatic, Junior ↗
Ten files under a source label
The Drum Machine Explorer interface labels ten samples Keio Checkmate, and Drum Abuse’s preservation register lists ten files under the same name with an approximate 1968 date. Those counts describe modern sample sets, not ten factory voices or ten preset rhythms. Neither register resolves the photographed instrument’s revision or provides a confirmed artist-session credit.
Keio Checkmate sample archive ↗ Drum Abuse Vol. 1: Vintage Rhythm Machines ↗
Sources
The visual archive
Further visual evidence.
Sources for images shown earlier (1)
Additional visual sources (1)
Original publications and related image sources.
- Rare vintage KORG / Keio Checkmate drum machine ↗
Current seller listing · Reverb seller · Listing title and accompanying specimen photographs