LSTN ConsultantsLSTN logo

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
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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

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.

Ken Andria

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

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

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.