In Kyiv, Artemiy Pavlov runs Sinevibes alone, writing DSP code for a device Korg barely mentions. The Korg Nu:Tekt NTS-3 is a soldering kit — you build it yourself — in the form of an X/Y touchpad with a handful of knobs. It makes almost no sound on its own. But the NTS-3 exposes its algorithm layer to third parties: any developer who knows C can write DSP code via Korg's logue SDK and load it onto the hardware over USB. Artemiy has built the most extensive library for this platform — state variable filters, phasers, comb filters, Bode frequency shifters — each running under the tight constraints of an embedded microprocessor, no cloud, no framework. Quarta, released July 2026, is his most structurally legible: the touchpad's X/Y space is divided into four zones, each configurable with one of ten DSP algorithms. Moving a finger across a zone boundary switches the sound-logic entirely; moving within a zone modulates that algorithm's parameters. Any algorithm can go in any zone. The entire setup can be configured on-device, no computer required.

To understand the remainder here, you first have to understand what construct is being chiseled. Hardware effects devices have operated under the same assumption since the 1970s: the manufacturer defines the algorithms, the user buys the device, the device IS its algorithms. Korg's KAOSS Pad line — KP1, 1999, through KP3 and KP-Quartz — crystallized this into a genre: X/Y pad plus manufacturer-chosen DSP equals "kaoss." You could not load new algorithms onto a KAOSS Pad. The device's sonic ceiling was set by Korg. Thirty years of KAOSS Pads operated in the same grammar: X = one parameter, Y = another parameter, position = some combination — all of this within a single fixed algorithm. The X/Y coordinate space has always been technically capable of mapping anything, but with the algorithm layer closed, it could only navigate within one algorithm's parameter range. The same closure applies across the hardware effects industry at large: you cannot add a new compression algorithm to a Boss pedal, cannot write new DSP into an Eventide. The hardware form is the sound ceiling.

Korg's chisel happened quietly. Beginning with the NTS-1 in 2018, Korg opened the logue SDK — a publicly documented C SDK for writing custom oscillators and effects for KORG hardware. Compile the code, transfer it via USB, the hardware accepts it. This structurally severs the underlying assumption: the NTS-3's sound identity is no longer set by Korg, but by whoever loaded it. Sinevibes is the deepest developer working in the territory this opened. Each of Artemiy's effects uses design logic and sonic categories that the original KAOSS Pad paradigm could not have named — they exist because the construct was chiseled, and for no prior reason.

The remainder has two layers, both structural. First: the X/Y touchpad as a space for navigating between DSP categories, not just parameters. Quarta makes this legible: four zones, four completely different algorithms. Cross a zone boundary and the sound-logic itself changes — filter becomes frequency shifter, phaser becomes comb. Stay within a zone and your finger position modulates that algorithm's parameters. This "navigate between sound-categories using spatial gesture" mode was latent in the X/Y form from the start — a coordinate space has always been capable of mapping categories, not just values — waiting for the algorithm layer to open. Second, and deeper: the entire NTS-3 plus logue SDK ecosystem as the unnamed territory of "commercial hardware whose sound identity is community-defined." Korg barely acknowledges this. Peter Kirn notes: "it's funny how little Korg talks about the NTS-3 or its expandable effects." The device appears in Korg's catalog as a "kaoss pad." Artemiy has built a richer library than anything Korg ships, operating from Kyiv with no institutional support and no category name.

Why does it matter to see Quarta now, before it gets a name? Because the naming window is closing on several sides simultaneously. Korg doesn't promote the ecosystem: the logue SDK is maintained but invisible in product marketing. AI audio tools are consolidating the "what does an effect sound like" conceptual space from another direction — once generated effect chains are standard practice, community DSP for embedded hardware retreats into historical footnote. The naming gap here is at its widest: not a "KAOSS Pad" (sounds aren't defined by Korg), not a "plugin" (physical hardware, doesn't live in a DAW), not "DIY audio" in the maker sense (you soldered the kit, but the DSP is specialist C code), not "open-source hardware" (Korg is a corporation; only the SDK is open), not "modular synthesis" (no voltage, no patch cables). Quarta exists at the intersection of these negations, not yet named by anything other than what it isn't. The form knows more than the genre can say.

Han Qin (秦汉) · @hqinjarsy · SAE Judgment & Aesthetics