Pro In-Ear Wired Earphone Design

I’m looking for a quick, focused concept design for a set of in-ear earphones aimed at professional audio work. Because I need this delivered ASAP, the scope is intentionally lean:

• A clear set of sketches or a simple 3D CAD layout that shows the overall form factor and nozzle angle
• Basic blueprint notes covering driver placement, cable routing, and housing materials suitable for critical listening environments
• A brief rationale (one page is fine) explaining how the design meets professional-audio expectations—neutral response, comfort for long sessions, and an unobtrusive profile on stage or in studio

If you can add a lightweight 3D visualization to illustrate fit, that’s a plus but not required at this stage.

Please keep the file formats straightforward (PDF, PNG, or common CAD) so I can review them immediately. Fast communication is essential; the sooner you can share an initial draft, the better.