I should structure the preparation steps now. Start with defining the scope, then move to design, development, testing, and documentation. Let me outline each section.

Let me revise the structure with a focus on the exclusive features themselves:

For example, a combination of dynamic audio adjustment (feature 3) with user-defined scenes (5) allows users to create and store specific audio settings optimized by an AI. That could be a powerful exclusive feature. Also, having real-time diagnostics (7) ensures the user knows the DAC is performing optimally.