For over 50 years, QSC has developed the technology and solutions that power immersive cinema, live performance audio, themed entertainment experiences, and digital collaboration and meeting experiences across the globe. A globally recognized innovator in the design, engineering and manufacture of category leading high-performance loudspeakers, digital mixers, power amplifiers, audio processors, digital cinema solutions, and the Q-SYS™ software-based audio, video and control Ecosystem. QSC thrives where enabling technology and audio-visual experiences intersect. We’ve earned the trust of our customers and partners worldwide with our award winning sales, service, and support teams, and always delivering high performance, highly reliable, scalable and flexible solutions for professional installed audio, portable, live sound, production, corporate and cinema applications around the world. 

QSC expertise is also evident in its advanced manufacturing and quality control processes. The company manufactures in its 81,000 square foot, state-of-the-art facility, located in Costa Mesa, California. Utilizing a compliment of demand planning, parts procurement, operations and logistics, computer-controlled precision assembly, and rigorous testing and control, the QSC facility is designed with build-to-order flexibility, giving the company unprecedented ability to respond to customer needs while keeping both parts and finished goods inventory at well-maintained levels. Select partners in Asia provide additional manufacturing.

Located on 51,000 square feet of office space on the same campus as the manufacturing facility are the QSC Corporate Offices, Engineering, Sales, Marketing, Technical Support and Service. Additionally, QSC has offices in Boulder, Colorado and Hong Kong, with sales and support staff located throughout North and South America, Europe, Asia and the Middle East. QSC maintains a local warehouse and distribution facility in Costa Mesa, with other facilities in Tennessee, Netherlands and China.

Employing over 400 people, QSC is also widely recognized as a great place to work, attracting the best and brightest individuals from all over the world. The company strives to provide a casual and fun work environment where people are genuinely excited to bring forth their best and let their talent shine.

QSC offers its employees an exceptional benefits package, further enhancing its ability to attract and maintain talent, and is a 6-time recipient of the Orange County Register’s “Best Place to Work” award.



Mission Statement

To become the most respected and trusted innovator of audio, video, and control technologies worldwide.


Our values are the bedrock of our brand and guide us in our thinking and in our actions.


Quality is essential in everything we make and everything we do. Consistent and pervasive quality sets us apart and increases our value to others. Constantly striving to improve our quality not only builds our business but helps us grow as individuals. Excellence is a sign of respect for our customers, business partners and ourselves.


Service is about meeting the real needs of our customers and one another. Being of service sets us apart and provides value to others. Anticipate the needs of others and help them to be successful. Let care for others guide your decisions and efforts.


Commitment is standing behind our word. Act with integrity, based on the long-term best interest of all parties, building trust. Do the right thing simply because it is the right thing to do. Go the distance to ensure that a promise made or implied is a promise kept.


We are better when we work together. Harness the power in individuals through effective teamwork within QSC, and in all our business relationships.

Respect, Dignity and Opportunity

We honor and respect the dignity of all people and celebrate the uniqueness of each individual. Our culture empowers everyone to bring their full, authentic selves to work and provides equal opportunities for growth and advancement based on skill, competence and potential. At QSC, it’s not about what makes you different. It’s about the difference that you, uniquely, make.

Work Hard / Enjoy Life

Joy and hard work go hand in hand. Nothing of lasting merit can be achieved without hard work but hard work cannot be sustained without a balanced life. Our goals and standards make hard work essential, but we make time to take care of ourselves – body, mind and spirit – making work enjoyable and fun in the process.


Pat Quilter

Founder & Board Member

The son of a Marine aviator, Pat Quilter’s interest in physics and electronics can be traced back to his high school days. “My high school physics course taught me everything I needed to know to get started in electronics, and laid a foundation that allowed me to begin building my first crude circuits in college,” says Pat. After flunking out of college due to the distraction of “hands on” learning of electronics, Pat moved to Southern California and began building guitar amplifiers to meet the needs of local musicians and artists. As the guitar amplifier business evolved into a professional audio amplifier manufacturing organization, Pat focused on product development efforts that included the awarding of several design patents and innovative products that revolutionized the world of professional audio production.  “Looking back at it all, I was pretty idealistic. I just wanted a cool little company that built nice stuff, didn’t burn anybody, and let me make a decent living,” says Pat. ”Thanks to the efforts of many others who shared in the vision, we greatly exceeded that goal over the years.”  In 2011, Pat returned to his passion of designing and building guitar amplifiers, and founded Quilter Labs where he designs and builds amps for some of today’s biggest artists in music.

Pat Quilter, QSC Founder & Chairman of the Board

Barry Andrews

Founder & Board Member

A broken British motorcycle turned into a defining moment for Barry Andrews. He walked into Quilter Sound Things seeking a ride home and ended up with a lifetime career. At 18, Barry started building guitar amp cabinets. Some years later, he talked Pat into to letting him try to manage the company. The early days at Quilter Sound were an incredibly tough but valuable real world school. Along with Pat and John, he led the company as it evolved from a three person guitar amp shop to QSC, a world leader in professional audio sound reinforcement. Barry went on to become the CEO of QSC Audio for over 30 years- driving business strategy, product strategy, sales and marketing activities.

No longer involved in day-to-day management Barry is not retired and remains highly active. As a board member of QSC he focuses on long term strategic planning and the coaching and mentoring of QSC executives and managers.

Outside of QSC Barry seeks to help entrepreneurs starting their own businesses, having made a promise himself to do so as a young man. He writes and produces documentaries focused on planetary health and Barry and his family have an entertainment production company that develops both film and television projects. He travels extensively having been to all seven continents and over 50 countries to date. He loves overlanding in remote parts of the U.S., designing and building expedition vehicles, fly fishing, cooking, photography and after a 40-year gap, riding motorcycles.

Barry Andrews, QSC Founder & Board Member

John Andrews

Founder & Board Member

John joined a fledgling QSC while still in high school, working part-time in the woodshop assembling cabinets and stuffing circuit boards as needed. While in college, his role within the company expanded and he soon took on running the front office; still with an eye on a career in real estate development. "At the time, I viewed QSC merely as a stop along the way and I was intent on moving on once I graduated,” says John. “I didn’t expect this to be a career.” Remaining with QSC after graduating from University of Southern California however, was a major cause of consternation with the Andrews family. John’s brother Barry recalls, “My father was furious at me. I remember him yelling, ‘We never thought you’d amount to much, but we had expectations for John!’" John’s full-time, early years entailed lots of on-the-job training particularly in the areas of manufacturing and operations which was a company need and fortunately of interest to him. A particular point of pride for John was his leadership role in the creation of the company’s “build to order” manufacturing capability which had a tremendous impact on the growth of QSC. Today, John still comes into the office but most of the day-to-day business operations are left to the team of talented individuals he helped assemble over the years.  When he is not in the office, he is eager to share his business knowledge with his children who in turn have shown their own entrepreneurial spirit.

John Andrews, QSC Founder & Board Member

Executive Team

Joe Pham - QSC President and Chief Executive Officer

Joe Pham, Ph.D.

Chairman of the Board and CEO

Joe Pham joined QSC in 2004 as Chief Strategy and Technology Officer. He was promoted to Chief Operating Officer in 2007 and President and CEO in 2010. In 2021, he assumed his current role as Chairman and CEO. Prior to QSC, Joe was with the global management consulting firm McKinsey & Company, working with chief executives to develop growth strategies and improvements to operational performance. Joe previously served as Chairman of the Board at AVIXA (formerly InfoComm International) and President of PAMA (Professional Audio Manufacturers Association). Joe holds a Ph.D. in Electrical Engineering from UCLA, specializing in adaptive signal processing and control systems, and is a former Professor of Electrical Engineering at UCLA. Joe's commitment to ensuring people connect and thrive combined with his lifelong passion for music help him ensure QSC maintains a fun, casual, and positive work environment where everyone has a voice and is genuinely excited to bring forth their best and let their talents shine. At his core, Joe is an innovator and is dedicated to delivering audio, video and control solutions that empower individuals and organizations to create impactful connections and memorable experiences.​​​​

Jatan Shah - QSC Executive Vice President/Chief Operating Officer

Jatan Shah

President, and Chief Operating Officer

Jatan joined QSC in 2010 as CFO, with over a decade of experience in strategic operations, product development, finance, and strategy. In 2012, he was promoted to Executive Vice President, COO and CTO. Since then, Jatan has taken on increasing responsibilities, successfully building new teams and capabilities while adding scale and driving success across the organization. In 2021, he assumed his present role as President and COO. Jatan currently serves as an AVIXA board member working with AVIXA executives, member organizations, industry partners and creative professionals to help shape the association's vision and expand the AV industry. Prior to QSC, Jatan worked at McKinsey & Company, a global management consulting firm, where he was Senior Engagement Manager, and Carrier Corporation, a provider of HVAC systems. In 2011 he received the Orange County Business Journal's CFO of the Year Award. Jatan holds multiple graduate degrees in Finance, Industrial and Operations Engineering, Applied Behavioral Analysis with an emphasis in autism, and a BE in Mechanical Engineering. Jatan’s interests include technology, music, business transformation and special education.

Anna Csontos - Vice President, Chief of Staff

Anna Csontos

Executive Vice President, Chief Market Officer and Chief of Staff

Anna Csontos has been a key member of the QSC executive team since joining the company in 2011, playing an instrumental role in developing and executing business strategies for growth. Prior to joining QSC, Anna worked for McKinsey & Company, a global management consulting firm, where she served clients in multiple industries and in various functional capacities around the world. Anna holds multiple masters degrees including an MBA from UCLA's Anderson School of Management and an MS in Economics from Corvinus University of Budapest, Hungary and most recently an MA in Developmental Psychology from Azusa Pacific University. While pursuing her MBA, she worked for AECOM, a Fortune 500 architecture and engineering firm as Corporate Finance Intern and for Avery Dennison, a Fortune 500 packaging company as Corporate Strategy Intern. 

Markus Winkler - Senior Vice President, QSC Systems

Markus Winkler

Senior Vice President, EMEA & APAC

Markus Winkler joined QSC in June 2017 as Senior Vice President, QSC Systems leading QSC's rapidly expanding global Systems Business, and overseeing the efforts to expand QSC's operational presence in EMEA (Europe, Middle East, and Africa). Markus joined QSC following his long and successful career at Shure EMEA, and brings over 20 years of executive leadership experience in the audio-visual industry. During his tenure with Shure, Markus led the expansion and growth of Shure's thriving business and organization in EMEA, serving as Managing Director of the region. Markus holds a Diplom-Betriebswirt from the University of Pforzheim, Germany.

Chris Humphrey - Vice President, Marketing

Chris Humphrey

Vice President, Marketing

Chris Humphrey leads global marketing for QSC, joining the company in 2016 with more than 20 years' experience in IT services, enterprise software, embedded computing, server and storage networking, energy and power storage, scientific instrumentation, audio, video and security. Humphrey has held executive leadership positions in VC funded technology start-ups, turn-around and large corporate environments, both public and private. Previous positions include VP Innovation and VP General Manager at Honeywell; VP Strategy, Marketing and Engineering at Maxwell Technologies (acquired by Tesla); and VP Corporate Marketing at QLogic. Humphrey holds degrees in Mathematics, Engineering and Theatre Arts (Playwriting), was previously Entrepreneur-in-residence and Domain expert with the CONNECT Springboard accelerator program in San Diego, has published peer-reviewed technical articles, holds US and International patents, and currently lectures at UC San Diego in Marketing and Innovation.

John White - QSC Vice President, Research & Development

John White, Ph.D.

Senior Vice President, Research & Development

John White joined QSC in 2013 as the company's Vice President, Research & Development, providing technical and managerial leadership for the company's R&D teams and product development initiatives. White held leadership positions with some of the world's leading AV companies, including Avid/Digidesign, Dolby Laboratories, THX, and Walt Disney Imagineering R&D. John's leadership has been instrumental in the continuous expansion and growth of QSC research and development into a multinational, multisite team, with a major emphasis in modern software development methodologies. John was promoted to Senior Vice President in October of 2021. White started his career as an electronics technician in the music industry and toured with artists including Pink Floyd, Stevie Wonder, Paul Simon, Luther Vandross, Jerry Garcia, Yes and others. John's educational focus on was on digital signal processing, and he holds Ph.D. and M.S. degrees in Electrical Engineering from the University of Florida, and a B.S. degree in Electrical Engineering from the University of Virginia.

Jason Moss

Vice President, Corporate Development and Alliances

Jason Moss joined QSC in January 2020 as Vice President, Corporate Development and Alliances. He is responsible for developing and managing strategic alliances with leading IT/Technology companies. Most recently, Jason was Global Head of Alliances and Go-To-Market for Logitech. Over his career at Logitech Jason also served in leadership roles as General Manager, Enterprise Sales and Global Strategic Accounts. Previous positions include Managing Director – Americas & Europe – Sales & Application Engineering at E Ink Holdings and senior management roles in Sales and Marketing at Advanced Micro Devices. As a global technology executive, he has launched diverse products and services in over 30 countries while successfully growing distributed teams in South America, Southeast Asia, China, Japan, Europe, and North America. Jason holds a B.S. in Computer Science Engineering from UC Davis and dual MBAs from Columbia Business School and UC Berkeley Haas Business School.

Vicki Arnold - QSC Vice President, Human Resources

Vicki Arnold

Vice President, Human Resources

The former 20-year Vice President of Human Resources for Warner Music Group, Vicki Arnold joined QSC in February of 2006. She is an active member of both the Society of Human Resources Management and the HR Strategy Forum. She holds multiple degrees from the University of Wyoming, including a graduate degree in Business.