Explain the meaning of a mix being 'locked' and why this status is important.

• A. The final mix balance and edits are fixed; no further changes allowed for deliverables.
• B. The mix balance is adjustable after delivery.
• C. The project remains editable if versions exist.
• D. The lock status does not affect the deliverables.

Answer: (A)

Locking a mix means the final balance, edits, and processing decisions are fixed so the delivered master is identical to what was approved. This status is essential because it creates a stable, verifiable reference for mastering, encoding, and distribution, and it prevents accidental changes after approval. It also supports clear version control and ensures everyone works from the same approved asset, which is critical for meeting delivery specs and broadcast requirements. If a mix weren’t locked, edits could be made after approval, leading to mismatches between the delivered file and the project or specs.