Stewart Audio

Custom Amplifier Services

Stewart Audio was founded in 1982 and has been producing commercial amplifiers for over 25 years. In 2007 the company was purchased by investors with the intent of moving the primary design efforts toward custom amplifier projects in the commercial and military markets. By leveraging our core technical competencies we can help solve customer specific problems not met with current off the shelf products in the commercial and military markets. Our headquarters is located in Mountain View, CA, in the heart of Silicon Valley. We believe that the number of talented engineers and technologists located locally has provided the ideal environment to build an engineering intensive organization. Our products are designed and manufactured locally and proudly bear "Made in the USA".

Rebrand existing designs

  • Utilize existing Stewart designs and modify external paint colors, logos, and knobs to customer specifications.

Modifications to existing amplifier designs.

  • Taking existing Stewart designs and modify external paint colors, logos, and knobs to new specifications.
  • Modify sheet metal enclosures
  • Board level changes to include new features, change inputs, outputs, LEDs, switches, power output, and more.

Custom Amplifier Design Services

  • RF power amplifiers (commercial and military)
    • Amplifier circuit
    • Power supplies
    • Enclosures
    • Special Features
  • Audio Power Amplifiers
    • Amplifier circuit
    • Power supplies
    • Enclosures
    • Special Features

Want more information? Email us - sales@stewartaudio.com

Look for Stewart At:


Las Vegas Convention Center
Las Vegas, Nevada
June 9-11, 2010
Booth C6739


Professional Affiliations

Proud Infocomm Member

Proud Namm Member


Contact Information:

Stewart Audio
14397 Cuesta Court Suite D1
Sonora, CA 95370
Phone: (209) 588-8111
Fax: (209) 588-8113
Email: info@stewartaudio.com

Proudly made in the USA
Stewart Audio amplifiers are proudly designed and manufactured in the USA