- What "CAT" Means on This Page
- The Gate You Cannot Skip: CETa First
- Exam Format and Passing Standard
- Registration, Proctoring and Test-Day Rules
- What the Competency Document Expects You to Know
- Retake Rules Within the First Year
- Keeping the Credential: Four-Year Maintenance
- Budgeting the Real Cost of Qualifying
- Who Hires Commercial Audio Technicians
- A Qualification Plan Built Around the Domains
- Frequently Asked Questions
- Commercial Audio Technician (CAT) is not stand-alone: ETA's CAT competency document requires Associate CETa certification first.
- The exam is 100 questions in two hours, with 75% required to pass and no hands-on assessment.
- The exam fee is $80 USD, and one free retake is available within one year of your first session.
- Certification lasts four years; maintenance needs 10 CE hours yearly (or employer verification) plus $25 per year.
What "CAT" Means on This Page
Several credentials in different industries share the three-letter acronym "CAT." This article is about exactly one of them: the Commercial Audio Technician (CAT) certification governed by ETA International. It is a Journeyman-level specialty credential covering the design, installation and troubleshooting of speech and music sound systems in commercial and institutional environments, such as auditoriums, houses of worship, conference spaces, schools and retail venues.
If you landed here searching for another certification that happens to abbreviate to CAT, the requirements below will not apply to you. If you want background on the credential itself before digging into prerequisites, start with What Is CAT Certification? or the shorter explainer What Does CAT Stand For?.
The Gate You Cannot Skip: CETa First
The single most important requirement is stated plainly in ETA's CAT-specific competency document: CAT is not a stand-alone credential, and Associate Certified Electronics Technician (CETa) certification must be acquired first. Candidates who plan their path around the audio exam alone and discover the CETa prerequisite late can lose weeks or months.
The practical implications are:
- Sequence matters. Treat CETa as step one and CAT as the specialty layered on top of it.
- Budget separately. The $80 CAT exam fee does not include the cost of the CETa prerequisite. Our CAT certification cost breakdown walks through how the pieces add up.
- Verify your standing before you register. If you already hold CETa, confirm your certification is current with ETA before scheduling the audio exam. If you do not, plan the CETa timeline first.
| Requirement | What It Means for You |
|---|---|
| Associate CETa certification | Must be acquired before CAT; the audio exam is a specialty add-on, not an entry point |
| Passing the CAT exam | 100 questions, two hours, 75% to pass |
| Photo identification | Required at the testing session |
| Hands-on assessment | Not required for CAT |
| Maintenance | Four-year term; annual CE hours (or employer verification) plus annual fee |
Exam Format and Passing Standard
ETA classifies CAT as a Journeyman-level credential. The exam is a written, knowledge-based test: 100 questions in two hours, which works out to roughly 72 seconds per question. The passing standard is 75%, meaning you need at least 75 of 100 questions correct. Because there is no hands-on component, everything you demonstrate is demonstrated through question responses.
That format shapes how you should prepare. Candidates with years of field experience sometimes underestimate a written exam because the work feels intuitive on a job site. Putting that intuition into the precise language the competency document uses is the real task. For a closer look at the scoring threshold, see our guide to the CAT passing score, and for an honest read on difficulty, How Hard Is the CAT Exam?
Registration, Proctoring and Test-Day Rules
CAT testing is proctored through an ETA Certification Administrator. Two delivery formats exist for the standard route: Trapeza online testing or paper/pencil. The standard Trapeza route requires an onsite administrator, so you will typically coordinate with a testing location or administrator rather than simply logging in from home.
ETA also offers a distinct remote-proctoring route through ExamRoom.AI. If travel or scheduling is a barrier, that option is worth investigating, but treat it as a separate process with its own setup steps rather than assuming it works like the standard route.
What to Bring and What Is Allowed
- Photo identification is required. Confirm the name on your ID matches your registration exactly.
- Scratch paper is permitted, but used scratch paper is surrendered afterward.
- A nonprogrammable scientific calculator is permitted under ETA's general examination rules. Do not bring a programmable or graphing model.
For timing questions, including how testing windows and scheduling work, see CAT Exam Dates: Testing Windows, Deadlines & Scheduling.
What the Competency Document Expects You to Know
ETA's Commercial Audio Technician - CAT: Categories Listing and Competencies Requirements is the scope source for the exam. It lists eight major competency categories. ETA publishes these as examination-preparation competencies and does not publish a percentage allocation for them, so no domain should be assumed to be the heaviest or to carry equal weight. The document currently linked is a 14-page file bearing a 2013 copyright; that date is simply what the document says and should not be read as evidence of any particular revision year for the exam.
Domain 1: Acoustics
How sound behaves in rooms, which governs nearly every design and troubleshooting decision downstream.
- Reflection, absorption, reverberation and room behavior
- How room characteristics affect intelligibility of speech and music
Domain 2: Microphones
Choosing and applying the right pickup device for the source and environment.
- Pickup patterns and their practical use
- Placement and feedback considerations
Domain 3: Speakers
Loudspeaker types, coverage and system integration.
- Coverage, placement and impedance considerations
- Matching speakers to the space and application
Domain 4: Sound & Measurements
Quantifying audio, where the calculation-heavy questions tend to live.
- Decibel relationships and level concepts
- Using measurements to verify and diagnose a system
Domain 5: Wiring
Cabling, connectors and signal paths in installed systems.
- Balanced versus unbalanced connections
- Cable selection and termination practice
Domain 6: 70-Volt Systems
Constant-voltage distribution common in commercial and institutional installations.
- Transformer taps and power budgeting across many speakers
- Why distributed lines are used for long runs and multiple zones
Domain 7: Troubleshooting
Systematic fault isolation in installed sound systems.
- Working methodically from source to loudspeaker
- Interpreting symptoms such as hum, distortion and dead zones
Domain 8: Safety, Codes and Standards
The rules that keep installations safe and compliant.
- Electrical and installation safety practice
- Applicable codes and standards for commercial sound installations
For a deeper domain-by-domain treatment, read CAT Exam Domains: Complete Guide to All 8 Content Areas.
Retake Rules Within the First Year
One of the more candidate-friendly features of the credential is the retake policy: one free retake is available within one year of your first examination session. This changes the risk calculation. A first attempt is not a one-shot, high-stakes event in the way a retake-with-full-fee policy would make it.
That said, a free retake is a safety net, not a plan. Use the first attempt seriously, then use your score feedback to target gaps if you need the second. Candidates who walk in "just to see the exam" waste the advantage the policy gives them. If you are wondering how often candidates clear the bar, our CAT pass rate article explains what published data does and does not tell us.
Key Takeaway
Schedule your first attempt when you are genuinely ready, with time remaining inside the one-year window to take the free retake if needed. Do not let the window lapse by delaying the second attempt.
Keeping the Credential: Four-Year Maintenance
Passing the exam earns a certification term of four years. To keep it active, CAT follows ETA's general Maintenance track (not Maintenance with Hands-On). The requirements are:
- Submit the maintenance form.
- Complete either 10 continuing-education hours per year (40 over the four-year term) or provide qualifying supervisor-completed employer verification.
- Pay $25 per year, totaling $100 over the four-year cycle.
Think of maintenance as part of the true requirement set, not an afterthought. If you work for an employer who can complete the verification, that route may reduce the burden of tracking CE hours. If you are independent, plan to collect training documentation as you go rather than reconstructing it in year four.
Budgeting the Real Cost of Qualifying
The sticker price of the audio exam is only part of the picture. Here is how the known figures stack up:
| Cost Item | Amount | Notes |
|---|---|---|
| CAT exam fee | $80 USD | Includes one free retake within one year of the first session |
| Annual maintenance fee | $25 per year | $100 total over the four-year term |
| CETa prerequisite | Separate | Not included in the $80 exam fee |
| Preparation materials and training | Varies | Not included in the exam fee |
Because CETa is a separate cost and preparation spending varies widely, the full path is more than $80. For a complete walk-through, see CAT Certification Cost: Complete Pricing Breakdown. If you are weighing whether the investment pays off, pair it with Is the CAT Certification Worth It? and the CAT salary guide.
Who Hires Commercial Audio Technicians
Because the credential centers on speech and music sound systems in commercial and institutional environments, the employers that value it are the ones that design, install and service those systems. Typical settings include:
- Audio-visual integrators and installation contractors that equip conference rooms, classrooms and auditoriums.
- Houses of worship and educational institutions that maintain their own sound infrastructure.
- Retail, hospitality and venue operators relying on distributed and background audio.
- Service and maintenance firms that troubleshoot installed systems for multiple clients.
In these roles, the topics that separate candidates are the ones the exam tests: understanding 70-volt distribution, reading a room acoustically, and troubleshooting methodically. More on the employment side is available in our CAT jobs overview.
A Qualification Plan Built Around the Domains
Rather than a generic study schedule, sequence your preparation by how the domains build on each other. Acoustics and measurements are foundational vocabulary; wiring and 70-volt systems are the most hands-on calculation topics; troubleshooting and safety tie everything together.
Confirm the CETa Path and Learn the Vocabulary
- Verify your CETa status before spending time on audio content
- Work through Acoustics and Sound & Measurements fundamentals
Signal Sources and Outputs
- Cover Microphones and Speakers together, since placement and coverage interact
- Practice decibel-style calculations with a nonprogrammable scientific calculator
Distribution and Wiring
- Focus on Wiring and 70-Volt Systems, including tap and power-budget math
- Drill the calculation questions until they are quick
Diagnosis, Safety and Full Practice
- Review Troubleshooting and Safety, Codes and Standards
- Take timed 100-question sets to rehearse the two-hour pacing
Adjust the pace to your experience; field technicians may compress the early weeks, while newcomers may need to extend the calculation-heavy ones. For a fuller preparation roadmap, use the CAT study guide, and keep the CAT cheat sheet handy for last-week review. When you are ready to test yourself under realistic conditions, our CAT practice tests mirror the exam's question style and timing.
Frequently Asked Questions
Yes. ETA's CAT competency document states that CAT is not a stand-alone credential and that Associate CETa certification must be acquired first. Confirm your CETa standing before you register for the audio exam.
No. CAT does not require a hands-on assessment. The exam is a written test of 100 questions in two hours, with 75% required to pass.
One free retake is available within one year of your first examination session. Use your first attempt seriously and plan the retake inside that window if you need it.
ETA offers a distinct remote-proctoring route through ExamRoom.AI, separate from the standard route, which uses an ETA Certification Administrator with Trapeza online testing or paper/pencil. The standard Trapeza route requires an onsite administrator.
The certification term is four years. Maintenance requires submitting the maintenance form, completing 10 continuing-education hours per year (40 over four years) or qualifying supervisor-completed employer verification, and paying $25 per year, which totals $100 over the cycle.
Requirements for this credential are straightforward once you see them laid out: hold CETa, pass a 100-question written exam at 75%, bring photo ID to a proctored session, and maintain the credential over a four-year term. The real work lies in mastering the eight competency areas, and that is where a structured approach, supported by realistic practice, makes the difference.