| Aspect | Per Diem Audio Mastering Engineer | Freelance Audio Mastering Engineer |
|---|
| Credentials | Typically requires audio engineering certifications and experience | Same credentials, often self-taught or with formal training |
| Work Environment | Temporary assignments, often on-site or studio-based | Remote or on-location, project-based |
| Employer/Industry Usage | Hired by studios or production companies for specific projects | Independent contractor serving multiple clients |
Both roles require similar skills and certifications, but Per Diem Audio Mastering Engineers work on short-term, often on-site assignments, while Freelance Audio Mastering Engineers operate independently, handling multiple clients remotely or on-site. The main difference lies in employment structure and project engagement style.