Known for its sunny skies and favorable climate, Oceanside, California is home to e3 Diagnostics San Diego. Since 1978, we’ve proudly provided the audiological community in Southern California with unparalleled audiometric sales and service expertise, better equipping hearing care professionals in the area to test and treat their patients daily.

Read More About the History
of Audiometrics.

What began as a family-owned-and-operated business over 40 years ago has grown into one of the largest and most reliable distributors of audiology equipment in The Golden State. Our mission is to help you navigate through our large catalog of products (160+ instruments), guide you to solutions that meet your needs, and ensure long-term performance with unparalleled repair and calibration services.


We’ve been in the community for a long time and have built strong, lasting relationships with many hearing care professionals within it. We are comprised of specialists (trained sales and support staff and electrical technicians) whom are just a phone call away and committed to providing you with unsurpassed service and support. Get in touch with us today to experience the benefits of working with a local audiology equipment sales and service solutions provider.

e3 EMICO – Instrument Service & Calibration for Biomedical Equipment

Through e3 Emico, our service division for biomedical equipment, we can repair and calibrate centrifuges, defibrillators, electrocardiogram machines, sphygmomanometers, and much more! Our biomedical service technicians have years of experience working with all types of medical devices, and they’ll handle your requests with the utmost efficiency. Learn more about how we can help keep your biomedical equipment running like new and request service with us today!

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Your Local Experts

e3 Diagnostics San Diego is a group of audiology equipment experts dedicated to ensuring hearing healthcare professionals across Southern California have the right instruments to provide their patients with the best treatment possible. Led by Matt Folsom, our team does whatever it takes to provide workable solutions to the dynamic challenges you face on a daily basis.

From providing Southern California’s finest hearing care professionals with cutting-edge audiology equipment, and superior repair and calibration services, to participating in local health fairs and charitable events, the roots of our business run deep within the community. We’re right in your backyard and at your beck and call when you need new equipment or service on your current instruments.

Matt firmly believes the Audiometrics San Diego team is the most cohesive in the industry, and he chocks it up to the collaborative approach and family feel applied when servicing customers. Leveraging our extensive technical expertise, team-based mentality, and ability to think outside the box, we’re able to handle customer requests of any scale. If you have a task that seems impossible, never hesitate to ask because we’ll likely be able to help.

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  • e3 Expertise

    Matt Folsom

    Regional Sales Manager
    (800) 873-1222

  • phil-allgaier-sdg

    Phil Allgaier

    Service Manager
    (800) 873-1222

  • marvin-ferguson-sdg

    Marvin Ferguson

    Service Technician
    (800) 873-1222

  • mark-reginio-sdg

    Mark Reginio

    Service Technician
    (800) 873-1222

  • brad-hak-sdg

    Robert Stewart

    Service Technician
    (800) 873-1222

  • elijah-stewart-sdg

    Elijah Stewart

    Service Technician
    (800) 873-1222

Contact e3 Diagnostics San Diego

e3 Diagnostics San Diego is the leading distributor of audiology equipment throughout Southern California. With years of combined experience, our experts provide top-notch consultation, calibration, and repair services. Get in touch with us today to learn more!

909 S Tremont St
Oceanside, CA 92054
Office: (800) 873-1222
Fax: (760) 435-1334

  • e3 Expertise


    Our staff of audiologists, hearing instrument specialists, and NASED-certified technicians offers you unparalleled expertise. We take a consultative approach to learn your pain points so we can equip you with the right audiology instruments to meet your unique needs.

  • e3 Excellence


    Our products and customer service meet the highest standards of excellence. We only provide audiology equipment and supplies from the most trusted manufacturers, and only employ the audiology world’s most skilled technicians and sales consultants.

  • e3 Everyday


    Wherever you are located in the United States, there is an e3 office within arm’s reach. This saves you time and money, and allows us to easily work with you on an everyday basis.