CAT Certification

What the Commercial Audio Technician Credential Actually Is

The Commercial Audio Technician (CAT) certification is administered by ETA International and focuses on the design, installation, and troubleshooting of speech and music sound systems in commercial and institutional environments. Think conference rooms, houses of worship, school auditoriums, restaurants, retail spaces, and municipal buildings: places where the audio system has to work reliably, be intelligible, and be installed to code, but where nobody expects a concert-hall rig.

ETA classifies CAT as a Journeyman-level credential. That placement matters. It signals a certification aimed at working technicians who already have a foundation in electronics and are specializing, rather than newcomers sampling the field. If you are still deciding whether the acronym on a job posting refers to this credential, see our explainers What Is CAT Certification? and What Does CAT Stand For?, which clarify exactly which "CAT" this site covers.

The CETa Rule: Why CAT Is Not a Stand-Alone Credential

The single most important structural fact about this certification is in ETA's own competency document: CAT is not a stand-alone credential. Associate Certified Electronics Technician (CETa) certification must be acquired first. Candidates who plan their exam date around the CAT alone, then discover the prerequisite, lose weeks or months.

Practically, this means a typical path looks like this: earn the CETa, then layer the CAT on top as a specialty. If you already hold the CETa, you can move straight to preparing for the audio-specific material. If you do not, treat the CETa as phase one of the project rather than a side errand.

Exam Format, Fee, and Retake Mechanics

The numbers below come from ETA International's published CAT exam information. There is no published percentage allocation across the competency categories, so any claim about which section is "weighted most" would be invention. Treat all eight areas as testable.

What 75% on 100 questions means in practice

With 100 questions and a 75% threshold, you can miss a limited number of items and still pass, but there is no domain-by-domain safety net published, so a gap in one competency category can be costly. Two hours across 100 questions leaves roughly a little over a minute per item, which is comfortable for recall questions and tight for multi-step calculation questions. Our dedicated breakdown, CAT Passing Score: Exactly What You Need to Pass, walks through how to think about that cut line.

The free retake

The included retake, available within one year of your first exam session, is a genuine safety valve. It does not change how you should prepare, but it does change the risk calculation: a first-attempt miss costs you time, not another fee. Use any first attempt diagnostically if needed, but do not plan on failing. For a realistic read on difficulty, see How Hard Is the CAT Exam? and, for what is and is not publicly known about outcomes, CAT Pass Rate: What the Data Shows.

The Eight Competency Categories

ETA's CAT competency document (a 14-page PDF, copyright 2013) lists the examination-preparation competencies by category. The copyright year reflects the document itself and should not be read as evidence of any particular recent revision. The eight categories are below, with the kind of knowledge each tends to demand. For a deeper treatment, see CAT Exam Domains: Complete Guide to All 8 Content Areas.

Registration and Test-Day Logistics

ETA tests through certification administrators rather than a generic walk-in testing center network. According to ETA's published administration information, testing is proctored through an ETA Certification Administrator, using either Trapeza online testing or paper and pencil. The standard Trapeza route requires an onsite administrator. ETA also offers a distinct remote-proctoring route through ExamRoom.AI, which is a separate path from the standard Trapeza one, so confirm which route your administrator or situation uses before you schedule.

What to bring and what to expect

• Photo identification is required.
• Scratch paper is permitted under ETA's general examination rules, and used scratch paper is surrendered afterward.
• A nonprogrammable scientific calculator is permitted. Given the decibel and constant-voltage math, practice with the same calculator you will use on test day, and make sure it is genuinely nonprogrammable.
• No hands-on component. The CAT is a knowledge examination only, so there is no practical demonstration to prepare for.

For scheduling windows and how dates work, see CAT Exam Dates: Testing Windows, Deadlines & Scheduling. Once you are in the final stretch, our practice tests let you rehearse the 100-question, two-hour format under realistic timing.

Where This Credential Gets Used

Because CAT targets commercial and institutional sound, the relevant employers are the ones who install and service those systems. That typically includes:

• Audio/video integration firms that design and install conference, classroom, and boardroom systems
• Electrical and low-voltage contractors that add sound distribution to larger building projects
• Facilities and maintenance departments at schools, universities, hospitals, and government buildings
• Houses of worship and venue operators that employ in-house technical staff
• Sound contractors servicing retail, hospitality, and paging/background-music installations

The credential demonstrates a verified baseline of competence in the topics above, which can help in bids, in hiring conversations, and when an employer wants a documented standard for its technicians. Whether it moves your pay is a separate question, and we avoid quoting numbers we cannot source; for an honest discussion, see CAT Salary Guide: Complete Earnings Analysis, CAT Jobs, and Is the CAT Certification Worth It?

Keeping the Certification Active

The CAT carries a four-year term. ETA's maintenance rules for CAT follow the general Maintenance track, not Maintenance with Hands-On. To keep the certification current, you submit the maintenance form and satisfy one of two paths:

1. Continuing education: 10 hours per year, totaling 40 hours over the four-year cycle, or
2. Employer verification: qualifying supervisor-completed verification of your ongoing work, in place of the education hours.

Either path also requires a maintenance fee of $25 per year, which totals $100 across the four-year cycle. Build that into your long-range plan rather than treating the $80 exam fee as the whole financial commitment.

Budgeting the Real Cost

The sticker price is simple; the real price needs a short list. The $80 examination fee does not include the separate CETa prerequisite, your preparation materials, or maintenance expenses.

For the full line-by-line picture, see CAT Certification Cost: Complete Pricing Breakdown.

Sequencing Your Preparation Around the Domains

Rather than generic study advice, the most useful planning idea for this exam is dependency ordering: some domains build directly on others, so the order in which you study them matters. Here is one sensible way to arrange roughly six weeks, assuming your CETa is already in hand. Adjust the pace to your background.

The reasoning: measurements and acoustics come first because they underpin everything; 70-volt systems come after wiring because constant-voltage lines are a wiring and load topic; troubleshooting comes late because you can only isolate faults in systems you already understand. For a fuller plan with resource recommendations, see CAT Study Guide: How to Pass on Your First Attempt, the CAT Cheat Sheet for last-minute review, and CAT Training for instruction options. When you are ready to test yourself, start with the practice exams on the main site.

Frequently Asked Questions