Large-diaphragm condenser, close-miked, slightly off-axis.
Yes. That’s the recipe. Julia Jacklin’s breathy delivery on “The Big Why” comes from a combination of mic placement and vocal technique — not just gear.
Use a large-diaphragm condenser (a Neumann U87 or similar) about six to eight inches from your mouth. Angle it slightly off-axis — not pointing directly at your lips, but a little above or to the side. This reduces harsh sibilance while letting you get close enough for the proximity effect to add warmth. You want the mic to catch the air from your breath, not just the fundamental tone.
Put a pop filter between you and the mic. Yes, you need it. Breathiness means more air hitting the diaphragm, and without a pop filter you’ll get plosives that ruin the take.
In the mix, a gentle high-shelf boost around 8-10 kHz can exaggerate the