About us

e3-msr-west-phoenix-customer-testSince 1978...

e3 MSR West has been the leading solution provider for hearing health care professionals in the Southwest.  Our reputation has earned the trust of providers in a wide variety of settings including, Hospitals, Clinics, Private Practice, Universities, K-12 Schools, and even Industrial Hearing Testing Programs.  The difference is our people; vendors sell equipment, we provide solutions.  With 30 plus years of industry experience each, Jim and Rod are able to help you find the right solution for your particular need, and at the right price.

Our service doesn’t stop
with the sale...

e3-msr-west-phoenix-sales-consultAt e3 MSR West, we know you have a choice when it comes to service - which is why we strive to maintain a world class service team.  With more than 75 years combined service and calibration experience, there are very few units out there that we haven’t seen, worked on, calibrated and fixed.  Whether you are in Phoenix, Tucson, Albuquerque or El Paso, our knowledgeable and skilled technicians are on the road every day To meet your service needs in a timely fashion.

Just ask...

Our staff’s expertise is wide reaching; everything from customizing sound rooms and fabricating custom closure panels to basic NOAH support and even networking your satellite offices.  Just because you don’t see it listed, doesn’t mean we can’t do it; give us a call today odds are, we can help!

To contact our New Mexico office:

Address: 6730 E McDowell Rd, Ste 102
Scottsdale, AZ  85257

Office:  (480) 813-2112
Fax:  (480) 813-2689

Your Local Experts

msr-west-az-jim-armstrong   Jim Armstrong

Regional Sales Manager
(480) 813-2112
  • Jim was employed by Acoustical Calibration Service as a Service Technician and thus started him on his career path in Audiometric Instrumentation. In 1986, he purchased and operated Acoustical Calibration Sales and Service, Inc. and ran the business successfully for 26 years providing Sales and Service in Arizona and New Mexico. In 2012, Acoustical Calibration Sales and Service was purchased by e3 MSR West and merged with the Arizona office. Jim holds an Associate’s Degree from DeVry Institute of Technology and is NASED Certified.
  Steve Brasso

NASED Certified Technician
(480) 813-2112
  • Steve joined the team when a service office was opened as to take all of the service needs for our New Mexico and Western Texas customers. With his technical expertise and electronics background, Steve is an asset not only to e3 MSR West, but to our customers and is a NASED Certified Technician.
  Danna Pita

Service Scheduling
(800) 777-4130
  • As our Service Scheduler, Danna’s attention to detail and administrative experience are what keeps things running smoothly and in a timely fashion. Whether you are calling to schedule your equipment for calibration or have an emergency repair, Danna will work with you to ensure minimal downtime for your equipment.
  Jana Kessler

Office Assistant
(800) 777-4130
  • Jana has been with e3 MSR West since 1995, helping out in various capacities, and is now our Office Assistant. Jana is committed to ensuring our customers experience when working with e3 MSR West not only meets, but exceeds their expectations, keeping up the foundation of “Helping the West to Hear.”

Expertise, Excellence, Everyday - The e3 Diagnostics Difference

e3 Diagnostics is based on three cornerstones:  expertise, excellence and everyday.  These three e's are the core values each team member provides to every customer, everyday.


Expertise is our people.  Audiologists, sales team, technicians and operational support. Across the nation, our network consists of the audiology industry's most respected and highly regarded leaders and business advisors.  We are here to help you grow and take care of your customers.


Excellence is our product and services, which are unparalleled in the industry.  We represent the world's leading manufacturers of the highest quality special instruments and supplies, and our national service team are factory-trained and NASED certified.


Everyday is our ability to be near you on an everyday basis, wherever you are and whenever you need us.  We have offices in your community no matter where in the US your business is, and our response time is typically within 24 hours.