MixByStos is a high-end mixing, mastering, acoustic design, and studio-building service led by Christos “Stos” Tsantilis — a Grammy-nominated, multi-platinum engineer and architectural-level acoustician. The brand includes MixByStos (mixing/mastering), StosLabs (acoustic design & gear), Velaris One (mastering speakers), and X.Stos (power distribution).

MixByStos is based in Brooklyn, New York, and works with clients across the U.S. and internationally. All mixing, mastering, and consulting services are available remotely.

Stos works with major labels, indie artists, post-production teams, commercial studios, mastering engineers, producers, and home-studio creators. Whether you’re a global artist or a first-time builder, services are tailored to your goals.

Yes. Remote mixing, mastering, consultations, and full acoustic design can be delivered globally. File delivery and communication are handled securely and efficiently for international clients.

If you’re unsure whether you need mixing, mastering, room tuning, acoustic design, or speaker solutions, Stos can guide you. A short discovery call or message will determine the best path based on your project and goals.

Christos “Stos” Tsantilis is a Grammy-nominated, multi-platinum mix and mastering engineer, acoustic architect, and studio designer whose work spans some of the most demanding rooms and records in modern music. With more than 35,000 professional studio hours, Stos has contributed to projects for NBC’s Saturday Night Live, Universal Music Group, Steve Miller, Q-Tip, Daniel Caesar, and dozens of major-label and independent artists.

Through his platforms MixByStos, StosLabs, Velaris One, and X.Stos, he specializes in high-fidelity mixing, mastering, immersive Dolby Atmos environments, and architectural-level acoustic design.