Four Tet enhances kick drums by layering a sine wave sub-bass and a click sound to add weight and punch.
The sub-bass layer, subtly mixed in, provides a deep weight that becomes very apparent in a club playback situation, while the click layer ensures the kick cuts through the mix with clarity.
This method of layering sounds addresses common issues with kick presence and weight, allowing for a more impactful and balanced mix without being required to make the kick too loud.