This bit covers a sequence of character-shaping moves inside Ableton Live's Hybrid Reverb, starting with pre-delay and feedback. Setting pre-delay to three 16th-notes and turning up feedback, which routes the pre-delay output back into its input, produces a distinct delay-like echo layered into the reverb tail.
From there, the Vintage knob adds coloration by simulating the sonic characteristics of older digital hardware reverbs, giving the effect a less pristine, more textured quality. Stereo width is then increased so the reverb spreads further across the stereo field.
Bass-Mono is switched on as a final safeguard, summing the lowest frequencies to mono to prevent phase cancellation in the sub range. Together these four controls show how much a reverb's character can shift beyond basic size and decay settings.