Akai S1000
Twenty-three seconds of mono sampling at 44.1kHz - the spec that made every bedroom producer start counting in seconds instead of dollars.
Overview
The S1000 is a 16-bit sampler that runs at two rates, 44.1kHz and 22.05kHz, and comes with 2MB of memory on board. That gets you 23 seconds of mono sampling at the top rate, or 11.5 seconds in stereo. In the late '80s, 23 seconds was a full drum kit, a bass patch, a horn stab, and still room for a vocal snatch. Stereo halved it, but most racks didn't offer stereo sampling at all.
A time-compression feature lets the sample time be changed without altering pitch. It reads dry on paper. In practice you could fit a longer phrase into the same memory without the chipmunk effect, or shorten a loop without dragging its tuning down with it.
The MIDI implementation is thorough. The unit receives on all 16 MIDI channels, and each keygroup in a program can receive on its own MIDI channel. That per-keygroup assignment is what made the S1000 multitimbral instead of a one-sound-at-a-time sampler. You could build a program with the kick on channel 1, the snare on channel 2, and a pad on channel 3, and drive the whole thing from a single sequencer track layout.
Disk compatibility with the S900 matters if you're shopping used. Existing S900 libraries load directly, so a buyer didn't have to rebuild a sound collection from scratch. Sample libraries were expensive and slow to assemble, and that gave people a real financial reason to stay with Akai.
Studio Sound (August 1989, p.68) noted a full S-1000 sample library prepared at Air Studios in London, available both on floppy disk and as audio on CD. Sound on Sound (April 1996, p.208) listed a used S1000 with 4MB of memory at £1,200 in its classified pages. That is a data point on resale values years after the model's peak, and it shows memory expansion was the upgrade path most owners pursued.
Memory is the practical detail for anyone buying one today. The 2MB stock figure is the floor, and the used market is full of expanded units. The 4MB example in that 1996 listing suggests the upgrade was common enough to show up routinely in secondhand ads.
The S1000 turns up in period studio gear lists alongside the MPC60. Recording Engineer documentation from the era places both in the same MIDI rigs, which tracks with the shared Akai sequencing-and-sampling workflow of a certain kind of late-'80s and early-'90s production room.
The time-compression feature, the two sampling rates, and the per-keygroup MIDI channel assignment are the three specs behind that. None of them are glamorous.
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