Ableton's Echo is the closest built-in device to a hardware dub delay; slight L/R timing error adds character
For dub techno made entirely in Ableton, the Echo device is identified as the main dub delay — ‘the closest you will get to dub delay in Ableton.’ It runs at a fairly standard delay time but with a little deliberate ‘error’ between channels (e.g. Left -0.7%, Right +1%) so the two sides drift slightly, adding movement and character rather than a mechanically perfect repeat. The Echo’s feedback sets the length and intensity of the main dub tail, so mapping feedback to a macro lets you ramp the delay for big live changes. This is the anchor delay around which the other, more specialised delays (grain-delay sub, high-frequency ping-pong) sit.
Examples
Echo set to a standard delay time, Left -0.7% / Right +1% for asymmetric drift; feedback mapped to a macro and ramped up as a build.
Assessment
Which built-in Ableton device does this tutorial treat as the primary dub delay, and what small setting gives it hardware-like character rather than a perfectly clean repeat?