Why is this effect so compelling psychoacoustically? The human ear detects slight differences in timing and pitch between two similar sounds as evidence of multiple sources—an ensemble, rather than a single point. The "Doubler 2 Stereo" exploits the Haas effect (precedence effect) while avoiding the metallic artifacts of flanging. By offering independent LFO shapes for each channel, it simulates the organic imperfections of a human double-track: no two takes are identical. The result is a sound that feels larger than its origin, yet retains clarity and punch.
Here is how to dial in the settings:
At its core, a Doubler 2 Stereo plugin (most famously associated with the Waves Doubler suite) uses a combination of and pitch modulation to simulate the effect of multiple takes. doubler 2 stereo
Pan hard left, set delay to ~15ms, and detune by -5 to -10 cents. Why is this effect so compelling psychoacoustically