“DeeDoubler is a plug-in that adds a doubling effect to vocals.
It brings depth to vocals by layering voices.
By reproducing the mixing technique using filters and phase adjustment that has been done for a long time, it features a clean and classic effect.
Operation is also very simple, with AMOUNT to adjust the amount of doubling and DELAY to adjust the width of the doubling.
It can be enjoyed on a variety of vocal tracks, including main vocals, chorus, and rap.”
Source : dotec-audio.com