Chapter three of “What Makes a Boogie” takes us inside the MESA/Boogie factory in Petaluma, California, to discover how every amplifier is built, assembled, and tested by a team with over 500 years of combined experience
MESA/Boogie® has released the third chapter in its four-part video series, “What Makes a Boogie,” taking us behind the scenes in Petaluma, California, for a factory tour to discover how MESA/Boogie amplifiers are built. From circuit board assembly and wooden cabinetry to guitarists putting every amplifier through rigorous testing, chapter three reveals the craftsmanship and attention to detail that go into every MESA/Boogie amp before it reaches you.
Leading the tour are Product Manager Tommy Waugh and Production Manager Bill Kelly. Bill has been with MESA/Boogie since 1992 and he oversees the entire production process, but as he explains, it’s the people who make these amplifiers special. “One of the core DNA components in making a MESA/Boogie is the people,” Bill says. “There are over 500 years of experience here. We have people who have been here 20 or 30 years, on average, putting their heart and soul into this.”
How are MESA/Boogie amplifiers made?
Every MESA/Boogie amplifier begins with a circuit board, which forms the foundation of its architecture and sound. “This is the heart and soul of the amp, the actual circuit,” Tommy explains. Although the raw boards are sourced externally, the team at the Petaluma factory inspects, installs, and solders every component in-house.
Bill takes us through the process, from the first components being inserted by machine to the intricate wiring and handwork required to complete each board, with technicians adding tube sockets, switches, jacks, and other parts by hand. Each board is then soldered, cleaned, and carefully inspected to ensure everything is correctly positioned and working as intended. And while the electronics are being assembled, work is also underway in the wood shop, where the amplifier and speaker cabinets are built.
Keo Khamvongsa, mechanical assembly wiring at MESA/Boogie
How are MESA/Boogie amplifier and speaker cabinets built?
In the video at the top of the page you will also see how MESA/Boogie cabinets are built by hand from Baltic birch plywood, with the thickness and construction varying depending on the model. Each cabinet starts from a large sheet of wood, which is cut on a CNC machine before being assembled, glued, nailed, and checked by the team in the wood shop, signing their name once finished.
The cabinets then undergo several rounds of sanding and finishing to remove any imperfections before receiving their vinyl covering. Even the inside of each cabinet is painted, despite being an area most players will never see. “We like to make sure that even if the customer is never going to open the cabinet up, the inside is finished,” Bill explains. The vinyl is cut precisely using a computerized cutting machine, while the grille frames and other components are prepared separately. Everything is then brought together during final assembly.
How does MESA/Boogie ensure the quality of its amplifiers?
Quality control is built into every stage of MESA/Boogie amplifier construction, with technicians checking and signing off on their work as each amplifier moves through production. A quality control card follows every chassis, recording who has worked on it and confirming that the required checks have been completed. “Every individual that touches that amp, from mechanical wiring to technicians, will sign off on that,” Bill explains. “Everybody who assembles the cabinet and the chassis together will sign off on that amp.”
Once the circuit board is finished, it moves to mechanical assembly, where transformers, switches, tube sockets, and other components are installed. The chassis then passes to Keo Khamvongsa, who has been wiring MESA/Boogie amplifiers for 33 years and carries out a final wiring check. Chances are, if you’ve bought a new MESA/Boogie amp in the last three decades, Keo checked it for you. Tubes are also tested in-house in a dedicated department known as Tube Town, where a custom-built machine called Robo Tube checks that they meet the required specifications.
A hammer is used on the chassis to test for failures and simulate the amp being hauled around
How does MESA/Boogie test its amplifiers?
Every MESA/Boogie amplifier undergoes several rounds of testing, including electrical checks, a hands-on play test, and a 24-hour burn-in designed to identify potential problems before the amp leaves the factory. Technicians begin by checking the amplifier’s voltages and electrical signal before carrying out what Bill calls the “fabled hammer test.”
The hammer test involves physically tapping the chassis to identify loose connections or potential faults. This practice dates back to founder Randall Smith’s original approach to making sure his amplifiers were roadworthy. Once the electrical checks are complete, guitarist and final assembly operator Kevin Robertson plugs in and puts the amplifier through its paces, listening for anything the testing equipment might have missed.
Why MESA/Boogie amplifiers are built to last
For the team at MESA/Boogie, building an amplifier isn’t simply about getting it through production. It’s about creating a musical instrument that a guitarist can rely on for years to come. Every amplifier receives a final quality control inspection before being packaged in custom-designed protective foam to help ensure it arrives in perfect working order.
“One of the sayings here has always been that we build keepers,” Bill explains. “We want to make sure that the product gets to you in working order and you don’t need to send it back to us for any type of repair.” That commitment also comes from the people who have spent decades building MESA/Boogie amplifiers. Toward the end of the video, Tommy reflects on almost 30 years with the company and the experience of now working alongside his son, who is also building amplifiers.
For Bill, that sense of family is central to the company’s culture. “If you take care of your people, they’ll take care of your product,” he explains. It’s a philosophy that has helped shape MESA/Boogie for decades and continues to influence every amplifier that leaves the Petaluma factory. Watch chapter three of “What Makes a Boogie” by hitting the play button above.
Catch up on chapter one and chapter two of “What Makes a Boogie,” and shop the full range of MESA/Boogie amplifiers today.
