LSTN is a boutique design firm that provides acoustics & audiovisual consulting for architectural projects.
We are enthusiastic and passionate about our work and seek clients that share our excitement and high expectations.
We are always available to our clients, providing high-quality, low-friction consulting. We are a responsive, flexible, and innovative.
We work across a wide range of project types, sizes and locales because we believe it broadens our understanding of design and construction methodologies, and deepens our grasp on the underlying technical principles. This cross-pollination creates insights that elevate our work from the status quo.
We’re deeply committed to sustainable design. We eschew tired assumptions, create new solutions, and employ new analysis, materials, and methods. We have been leaders in mass timber acoustic design in the US for nearly a decade, including research and development of novel designs and products, authoring publications, collecting acoustic test data, and presenting our work at conferences.
Our integrated practice harmonizes acoustic and audiovisual design. Our collaborative approach ensures that every aspect of the design works cohesively, from acoustic finishes to loudspeaker design, from performance venues to workspaces.
Our designs are not prescriptive; they are bespoke.
LSTN is always under construction
SERVICES
Architectural Acoustics Consulting
Room Acoustics
Sound Isolation
Building Systems Noise and Vibration Control
Environmental Noise and Vibration Control
Audiovisual Systems Design and Consulting
Production Sound and Video Systems
Presentation and Conferencing Systems
Interactive/Iconic Media Experiences
Broadcast Systems
Paging and Public Adress
Sound Masking
PEOPLE
The firm is led by Ken Andria, Matt Mahon and Denis Blount from New York and Seattle.
The partners are jointly responsible for the delivery of all projects. They bring diverse and complementary skills and experience.
PARTNERS
Ken Andria Partner
Ken has provided acoustic consulting for a wide range of high-profile and acoustically critical projects for over 15 years.
He formed LSTN in 2016 so that owners and architects could work with directly with a trusted principal consultant throughout the life of a project. People work with Ken repeatedly because of the focus and composure he brings to projects.
Ken holds a master’s degree in architectural acoustics from RPI and a bachelor of architecture from Cornell.
Ken’s combined training in design and engineering is ideally suited to the unique demands of acoustic consulting. It also makes him a compelling educator—Ken teaches building systems to undergraduate architects at the Pratt Institute.
Matt Mahon Partner
Matt’s work at LSTN follows more than a decade with the global engineering firm Arup where he provided acoustics and audiovisual consulting on many world-class projects, from cultural to commercial.
Matt joined LSTN in 2019 to better cater to discerning clients, providing the boutique attention the best projects deserve. People continue to work with Matt because of his curiosity and commitment to the final execution of projects.
Matt holds a bachelor’s in mechanical engineering from Northwestern and remains active in education: He teaches acoustics to undergraduate engineers at Cooper Union and building systems to undergraduate architects at the Pratt Institute. He is a regular contributor to panel discussions on the future of audiovisual design.
Denis Blount Partner
Denis Blount joined LSTN in 2024 and launched out Seattle office to enhance our ability to service clients/projects on the west coast and beyond. His work focuses on the intersection of acoustics, audiovisual, and architectural design.
Denis has become a leading advocate for mass timber research and construction, presented multiple times at the International Mass Timber Conference in Portland and Woodworks seminars, published several academic papers, book chapters, articles, patent applications, been interviewed for podcasts and news articles, and has been honored to receive numerous awards including Consulting Specifying Engineer’s 40 under 40.
Denis holds a bachelor’s in sound engineering from the University of Michigan and has completed graduate studies in acoustics and signal processing at New York University. He has guest lectured at NYU and the Pratt Institute.
TEAM
Leah Guszkowski Senior Consultant
Leah specializes in acoustic and audiovisual design, bringing a thoughtful and artful approach to every project. With a background in architecture, music performance, and environmental studies, she skillfully weaves these disciplines into elegant and cohesive design solutions.
Leah’s expertise extends beyond design, encompassing site testing and commissioning for acoustics, electro-acoustics, and AV systems. Her eye for detail has shaped the visuals for acoustic publications, demonstrating her creative versatility.
In 2024, Leah joined LSTN, strengthening our West Coast team after nearly a decade at the global engineering firm Arup. This move builds on her long-standing collaborative relationships with both Denis and Matt, bringing fresh energy and depth to our projects.
Leah holds a master’s degree in architecture from Columbia University. And a bachelor’s of liberal arts from Sarah Lawrence College.
Sam Wadsworth Consultant
Sam focuses on audiovisual design and engineering, bringing a unique blend of technical precision and creative insight to his work. With a strong foundation in electrical engineering and years of hands-on experience in studio recording, live sound, and audiovisual system integration, Sam approaches every project with a dedication to innovation and quality.
Sam’s professional journey has involved every layer of the audiovisual world: designing and prototyping audio circuitry, music performance, producing live streaming events, and founding/operating his own Brooklyn-based project studio.
At LSTN, Sam draws from his multi-faceted experiences in the AV industry to deliver right-sized, user-friendly solutions for our clients and their projects.
Sam holds a Bachelor of Science in Electrical Engineering from Northwestern University.
Francis Fedora Consultant
Francis brings a unique blend of musical and technical expertise to his work in acoustic and audiovisual design, with a particular focus on performing arts environments. His background as an orchestral and chamber musician, contemporary performer, music director, and stage manager gives him a deep appreciation for the subtle needs of artists and audiences, which informs his approach to designing spaces that truly support the arts.
He began his acoustics career with Denis at Arup before moving to Salter in San Francisco, where he worked on projects ranging from transit-oriented housing and healthcare facilities to high-end offices and specialized performance spaces. Francis joined LSTN in 2025, expanding the New York team alongside Ken and Matt. He holds a bachelor’s degree in Physics and the History of Science from Yale University with graduate-level study in acoustics, and was selected for the Acoustical Society of America’s Early Career Acousticians Retreat in 2025.
Spencer Davis Accountant
Spencer is LSTN’s financial specialist, providing expertise in accounting, reporting, and strategic financial advice. A Certified Public Accountant with over 15 years of experience, he has built his career on delivering clarity and reliability in financial management. Spencer supports LSTN with the systems and insights needed to keep projects and operations running smoothly, drawing on his background as a Senior Accountant at Pearce, Bevill, Leesburg, Moore, P.C. and his earlier work in account analysis at MedSym Solutions. He holds degrees in Accounting from the University of Alabama at Birmingham and Economics from Birmingham-Southern College.
