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StosLabs mixing and mastering studio with acoustic treatment and main monitors
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Your sound
Fully realized

Mixing, mastering & studio design by Christos “Stos” Tsantilis.

For artists, producers & labels.

Bring your music from mix to release. Share your track and goals for a quote. Scope, timing, and pricing are agreed before booking.

For studio owners & facilities.

​Build or improve a studio you can trust.

AES-featured panelist for NBC Saturday Night Live’s Emmy-winning Dolby Atmos control room redesign

Christos “Stos” Tsantilis — Multi-Platinum, Grammy-Nominated Mix & Mastering Engineer and Studio Designer

Christos “Stos” Tsantilis is a multi-platinum mixing and mastering engineer based in Brooklyn, NY. With 35+ years of studio experience, Stos specializes in mixing, mastering, Dolby Atmos room tuning, and studio design trusted by Sony, Universal, NBC, and top artists worldwide.

His work has contributed to over 20 million records sold and more than 20 RIAA-certified platinum and gold plaques. Projects span hip-hop, soul, jazz and film, with collaborators including Patti LaBelle, Mýa, Just Blaze and Ka. His background combines recording, mixing, mastering, Sony quality control and acoustic design. He has worked in The Hit Factory, Electric Lady Studios, Chung King and The Cutting Room. Stos designs and tunes stereo and Dolby Atmos studios, including facilities for Q-Tip and Blair Wells. He has taught at City College and York College and shares practical experience through industry seminars.

 

About

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"The architecture and design of acoustical properties in musical material should be approached with precision, passion, and expertise."      —Christos Tsantilis

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Services

Mixing

For independent artists, producers, and major labels.

 

Mastering

For music releases, commercials, and podcasts.

 

Acoustic Design & Room Tuning

Stereo and Dolby Atmos studios, production rooms, rehearsal spaces, home theaters, lecture halls, and conference rooms.

Custom Studio Furniture & Treatment

Mastering consoles, equipment racks, bass traps, diffusers, absorption panels, and acoustic doors.

 

Sound Isolation

Soundproofing design for professional studios and residential spaces.

 

Project Management

Full facility builds, from design coordination to installation and final room tuning.

Trusted By the Industry’s Best

Sony
Universal Music Group
Republic Records
NBC chose Christos "Mixbystos" Tsantilis to design and tune their SNL Dolby Atmos Mix Room
Motown Records
DEF JAM
Warner Records
RCA Records
Atlantic Records
Fat Beats
Loud Records logo
Rawkus Records logo
Mission statement: The STOS approach isn’t about manufacturing products — it’s about engineering precision. Every STOS creation exists to set a new benchmark in sonic performance and acoustic architecture. Our mission is to design tools and spaces worthy of the world’s most demanding artists, engineers, and rooms, shaping the future of sound one innovation at a time.

Client Testimonials & Featured Press

A curated collection of professional testimonials and industry press highlighting Christos “Stos” Tsantilis’ award-winning work in mixing, mastering, and studio acoustic design.

NBCUniversal graphic celebrating 20 Emmy Award wins

Jay Vicari
Six-time Emmy Award-winning music mixing engineer.
The SNL 50th Anniversary Special won the 2025 Emmy for Outstanding Sound Mixing for a Variety Series or Special.

“After Christos and his team re-designed and tuned the SNL Mix room for the 50th Anniversary, we had no issue with our mix translation. Mixing has been easier.”

Portrait of Scott Free

Scott Free
Ranked by Complex Magazine
as one of the top 25 A&Rs in hip hop history


“My favorite engineer throughout my 25 years of recording. Mixed quite a few platinum and gold classics for us at LOUD Records including Big Pun, and dead prez...”

Portrait of drummer Chuck Sabo

Chuck Sabo
Drummer for XTC, OMD, Cher, Elton John, Bryan Adams, Brian Eno, Etienne Daho, Chaka Khan, KT Tunstall, Natalie Imbruglia, Tina Turner, Right Said Fred and many more.


“I love recording drums on quality music, that's produced by professionals who know what they're doing....and what they want. That's what I got from Christos!”

Music producer Shroom working at a mixing console

Shroom
A multi-platinum music producer. Credits include: Wu-Tang Clan, Mobb Deep, DMX, Nas, Pusha T, The Lox, J. Cole and Eminem.


“Stos is a legend! Incredible engineer and one of the smartest people I’ve ever met. True genius!”

Portrait of musician Steve Miller

Steve Miller
Rock and Roll Hall of Famer with hits like “Fly Like an Eagle”, “The Joker”,
and “Abracadabra”

 

“Stos You ARE Bad to The Bone!!! StoS!!! These rooms sound sooo good, I don't want to stop working in them! I love them! Thank you!”

Portrait of Universal Music Group executive Michael Frey

Michael Frey
President, Supply Chain & Media Services,
Universal Music Group (UMG) 

“Christos designed one of the best Dolby Atmos reference rooms in NY.”

Portrait of Grammy Award-winning engineer Ken “Duro” Ifill

Ken Duro Ifill
VP of A&R for Republic UMG and Grammy Award-winning engineer with a discography spanning two decades that mixing engineers can only dream of.


“The clarity of my new room is unsurpassed.”

Portrait of journalist and author David Weiss

David Weiss  
Internationally published journalist and author, music supervisor, editor of Mix Magazine NYC, and co-owner of SonicScoop.


“Christos is absolutely one of the most knowledgeable and passionate mixers I have ever met. He takes sound extremely seriously, while being extremely pleasant and professional at all times. I highly recommend Christos Tsantilis for mixing, mastering and studio design. Or rather, I can't recommend him ENOUGH -- an outstanding audio pro.”

PRESTON PRIZZIE

Preston “Prizzie” Reid
Engineer with credits including
Tyla, Ozuna, Chris Brown, Usher, Muni Long, Summer Walker, 21 Savage, Latto, Vedo, and Rini among many others.


“Every time someone steps into the room, they’re beyond surprised by the look of the room... and then I press play! They’re blown away by how massive it sounds to be a fairly small mixing suite. Working with Christos was great. The main goal was to make sure the room hit all of the technical checkpoints of a major studio while maintaining a vibe that felt good for anyone to be in (not just engineers). It’s safe to say we achieved that and then some!”

Tatsuya Sato
Senior Mastering Engineer at "The Mastering Palace"
Tatsuya's clients include: Aleks Syntek, Tank and the Bangas, Nardo Wick, Juice WRLD, A$AP Rocky, Tyler, the Creator, and Danny Brown


After tuning and speaker placement: “Sounding unbelievably precise in here! Insane!!!!!”

Tatsuya Sato Mastering And Christos Tsantilis Design

Selected Press & Industry Coverage
 

Selected coverage highlighting mixing, mastering, and studio design work. Full press and verified credits available on the Press page.

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Mix Magazine: Inside Ka’s The Night’s Gambit Engineering by Christos “Stos” Tsantilis

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Spectrum Culture: Album Review: Ka The Night’s Gambit (2013)

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Audeze Artist Interview: Audeze Chats with Producer & Engineer Christos Tsantilis

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SonicScoop: Mix Tips by Stos – 10 Multiband Compression Tips

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Mixonline: BB4 Studios Launches: World-Class Mixing & Mastering 

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View full press, features & verified credits →

Bring your next mix or studio project to life.

StosLabs mixing and mastering studio in Brooklyn, with main monitors and acoustic treatment
Audeze headphones resting on analog mastering equipment
Verified Profiles

Explore my verified profiles for client reviews, project credits, and booking options for mixing, mastering, and acoustic consulting. Most projects are booked directly through MixByStos. I also maintain these profiles so new collaborators and label partners can review my work and client feedback.

© 2026 MixByStos LLC. All rights reserved.

Mixing • Mastering • Studio Design • Acoustic Consulting

Brooklyn, New York

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Christos "Stos" Tsantilis Wikidata Profile
https://www.wikidata.org/wiki/Q136917938

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