Ah but those are stems from a multitrack master, not separated from a stereo track using a computer algorithm. They’ve existed since the birth of multitrack recording. Big difference.
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Here’s some from 2001.
https://www.discogs.com/release/20612-X-Press-2-Smoke-Machine
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I had not considered vinyl 
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Now to just buy 5 x 1210s and 5 copies of the record lol.
I have this that sort of does it too, but slightly different, it has the acapella and then 8 ‘locked grooves’ that will play a drum loop infinitely.
https://www.discogs.com/release/664256-Harry-Choo-Choo-Romero-Beats-Vol-2
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Stems have been around for a long while in the music industry, been using them to remix projects. Don’t need the 2" tapes anymore
For DJS? no.
So that X Press 2 vinyl that Stu mentioned was not for DJ use?!
Stems as a file on your computer, or separating it out from a stereo track is new, but stems in recording studios as part of multitrack recording are not new.
DJs like Larry Levan, Francois Kevorkian etc would have had good enough industry connections to get hold of those parts on tape or acetate if they wanted to - in the 70s.
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There’s still something magical about layering an Acapella manually over another track and I think DJs both new and old should preserve this skill and not get caught up in this stems hype too much. Don’t let it be another technique that dies due to technology.
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Bearing that in mind I’m guessing you’ll be leaving the car and riding a horse to work tomorrow then …
Things move on.
Mind you the acapella of Trapped by Colonel Abrams is still a bit special for that reason.
Produced by Richard James Burgess of Landscape (Einstein A Go Go), who also produced Spandau Ballet’s early material, and apparently coined the term “New Romantic”.
He was also involved in the design of the Simmons electronic drum kit, and Spandau were first to use one on TOTP according to Gary Kemp.
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I think most effects and loops for stems are too powerful it’s like a crate digging and different genre. Someone very skilled can be more creative
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The horse and cart reference is a complete shocker here I’m afraid… these skills are still completely relevant and always will be, and in case you didn’t notice the old skool ways of DJing are having a massive revival, there’s a reason for that.
My point still stands about preserving these techniques, anyone who claims otherwise is a fool.
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An audio dsp is a totally different beast than a GPU, NPU or CPU. A dsp’s strength lies in real time computing, so you can Process a Digital Signal without any DAC or ADC buffers, meaning with almost no latency, while [“G”,”N”,C”]PU’s have to do time management, with interrupts and everything, so their input and output needs to be buffered, hence creating latency… Usually a DSP does some form of fast fourier transformation, and is popularly used in audio mixers, equalisers (both FIR and IIR filtering), speaker management systems, synthesizers, and even guitar processors. And while FFT is higher maths, its not nearly on the same level as AI… In the whole of the engine Prime series a DSP is just necessary to pass external audio from the inputs to the outputs without adding latency…
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I didn’t think the whole series had DSPs…
True, its being abused instead of skill, talent and creativity. Also just any beat under an acapella does not work.
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Tell me you work with low-level embedded systems without telling me that you work with low-level embedded systems.
I dont actually, but due to having a history as a semi pro sound engineer, combined with a graduate in IT, I read too many interesting articles than is healthy for me 
If they have inputs that are routed directly to the output (mic input for starters), then they probably have. The alternative would be routing it through the embedded linux on the rockchip, which gives different latency numbers: <1ms vs around 10ms…
Well, maybe somebody can measure the latency of the mic input of the whole Prime range. If its <1ms round trip, you can be very sure there is a DSP…
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Compared to you, I am a knuckle dragger 
Come on, Ive seen you make some pretty intelligent statements on the sqlite database too. IT has a very broad palette of skills to specialise in, and you cant do them all. I just scratch the surface of most things, just to be able to understand what is going on in case of troubleshooting, much like a project manager does.
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