Introduction: What is the Waves H Delay? In the world of digital audio workstations (DAWs) and mixing engineering, Waves H-Delay stands out as one of the most beloved hybrid delay plugins. Developed by Waves Audio, it combines the warmth of vintage analog bucket-brigade devices (BBD) with the precision of modern digital processing. It is famous for its gritty character, modulation capabilities, and the ability to sync to host tempo—making it a staple on vocals, guitars, synths, and drums.