There are three distinct lights here that serve unique purposes. The light to the right of the packaging is primarily a gradient. It helps define the curvature of the packaging along with a spherical recessed area. Due to the nature of the packaging material, it also serves as a light that establishes the underlying clay texture. Two lights on the left are key and fill lights. The broader light helps to distribute lighting very evenly yet preserve all the intricate details. The smaller key light draws the shape mainly through specular reflections. Since they have more compressed BRDF distributions, they provide a required contrast at every turn of the surface, surface texture and glossiness irregularities.
Note: All lights have softbox gradients that are designed to either simulate a physical softbox or to help the light blend better into the curvature of the object making it look less harsh. In most images I have excluded DOF effects or lens imperfections. This helps better understand lighting and materials without creating extra photo-realism through means of obstruction. DOF is only used where necessary — where the surface is unimportant but the depth cue is required. Every scene has an a L shaped white surface that is lit with it’s own light to control how much of a bounce light / reflection is given back to the headphones.