Celebrations and special events. Concerts in the park and driveway jams. Coffee houses and dance clubs. Wherever people gather to enjoy the soundtrack of life, we’re there.

Audio is our life. Since our humble beginnings in 1968 in a small garage in Costa Mesa, California, we’ve always set our sights on empowering performers and entertainment providers with exceptional products and unparalleled support, giving them the confidence to deliver memorable experiences for their audiences. Today, QSC is a leading manufacturer and global innovator with R&D, manufacturing, sales, marketing,

support and operations teams across multiple continents — light years ahead of that startup company selling hand-built power amplifiers assembled on wood and steel benches one-by-one from the back of a van. But no matter our size or scale, we remain grounded to our commitment to amplify life through sound. 

Our Vision

To bring joy to people everywhere through the art and science of live performance.

Our Mission

We are dedicated to empowering people with the confidence to create impactful and memorable experiences for their audiences
with our innovative, high-performance, easy-to- use audio solutions and industry-best training and support.

Our Values

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.

Our Leadership

David Angress

Senior Vice President and General Manager - QSC Pro Audio

David’s career includes decades as a senior executive in the music products industry with companies that include ADAM Audio GmbH, Guitar Center, Harman, and AKG. David played a pivotal leadership role at Guitar Center in the development of its merchandising, marketing and private label programs, as well as plans for expansion outside the U.S. As an industry consultant, he has utilized his extensive international experience in marketing, product management, and international distribution to develop business relationships for his clients throughout the US, Europe, and Asia. 

Perry Celia

VP of Global Sales and Service - Pro Audio

Perry Celia joined QSC in 2008 as Director of Sales, West Coast. Throughout his 14-year tenure, Perry has held a number of leadership roles at QSC, including Director of North American Sales, Sr. Director of Sales, Americas, and his current role, VP of Global Sales and Service for the company's Pro Audio Division.

Perry started in the music and pro audio industries in the early 1980, performing as a studio session drummer on a variety of albums as well as a  and live drummer several nights a week with a number of popular bands, while also working at West LA Music in Santa Monica, CA.  After more than a decade of playing music professionally several nights a week, Perry joined Alesis Corporation full-time, as Director of Sales for the Eastern Region. In 1996 he partnered with Chicago rep firm, Sound Marketing, and became the Co-Founder/VP of  Sound Marketing West in Los Angeles, a firm that represented Harman and a number of other leading brands. Perry was later recruited by JBL Professional as Director of Sales, Eastern Region in 2004, serving there until joining QSC in 2008.

A musician, recording engineer and producer, Perry is passionate about providing customers with top level products and solutions which are transparent and perform flawlessly in the creative process.

David Fuller

VP of Product Development - Pro Audio

A Native New Zealander, David joined QSC in 2011 as Regional Sales Manager for Asia-Pacific, relocating to Southern California in 2012 to serve as QSC Director of Application Engineering. During his 12-year tenure with QSC, David has held a number of roles, including Sr. Director of International Sales, Sr. Director of Entertainment Product strategy, and his current role as VP of Product Development for Professional Audio. 

David entered the Pro Audio industry during the mid 1980’s working as a Musical Instrument retail salesman by day and a professional cover-band musician by night.  By the mid 1990’s David was recruited by Jands, the NZ Distributor for professional audio brands such as Shure, JBL, Allen & Heath and QSC, in sales, marketing, tech-support and supply planning functions.  During this period, David also worked as an RF Engineer for many internationally broadcasted Rugby & Rugby League matches held throughout New Zealand.   

In 2001, David left New Zealand, serving as International Market Development Engineer for JBL out of their US corporate office before returning to NZ in 2006.   

Linda Lee

Sr. Director, Operations - Pro Audio

Linda Lee has a wealth of leadership experience in supply chain and operations, rejoining QSC in 2022 after over 20 years of progressive growth at companies including HID Global, Lantronix and most recently Indentiv, where she served as Sr. Director of Global Supply Chain and Operations. She possesses a Mathematics BS degree from University of California at Irvine, is certified by the Institute for Supply Management as certified Purchasing Manager (C.P.M.) and holds additional purchasing management certification from Coastline College. She believes in leading by example and uses her positive attitude and tireless energy to motivate others to apply themselves and succeed. In her free time, Linda likes to spend time with family and travel the world.

Ray van Straten

VP Brand, Marketing & Training - Pro Audio

Ray van Straten has been a member of the QSC leadership team since joining the company in 2002 heading US retail sales. Since that time, he has held progressively responsible leadership roles across a range of US and international sales, marketing, training, and executive functions. Ray’s contributions to QSC include some of the industry’s most significant product introductions such as K Series and Q-SYS, while also architecting innovative and progressive market and channel strategies, providing a platform for transforming the company into a globally respected top-tier brand. Prior to joining QSC, Ray was with Yamaha Corporation of America, where he served as District Manager for the Pro Audio and Combo Division, and later, National Accounts Manager.

A lifelong musician, performer, and digital creative tools early adopter, Ray is commercially driven to enhance the creator/performer experience through exceptional, intuitive technology, supported by accessible education and knowledge resources, a robust culture of community engagement, and outstanding customer service. He has served on the Board of Directors of NAMM, holds multiple marketing, management, and leadership certificates, and possesses a bachelor’s degree in Commercial Music.

QSC, LLC Board

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. www.quilterlabs.com

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.

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.

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 excited to bring forth their best. At his core, Joe is an innovator and is dedicated to delivering technology empowered human-centric experiences.​​​​

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

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.