How to Compare PEMF Specification Sheets Across Brands

Summary: A PEMF mat specification sheet is intended to describe hardware and output parameters such as frequency range, magnetic field strength, waveform, and coil architecture. It does not tell you what the mat will do for your health. Comparing two spec sheets accurately requires knowing where each intensity number was measured (at the copper coil or at the mat surface), whether the stated Gauss figure represents peak or continuous output, and whether the controller actually exposes those parameters to you or hides them behind preset labels. The highest number on the page is not automatically the strongest delivery at your body.

When you see two PEMF mats side by side and one says “30 Gauss” while the other says “10 Gauss,” the instinct is to assume the first mat is stronger. That instinct is often wrong. Manufacturers measure intensity at different points, report it under different conventions, and describe controllers in ways that obscure whether any stated specification is actually accessible to the user. This guide explains how to read those differences, what a specification sheet can verify about a mat’s hardware output, and what it cannot tell you about health outcomes. Before comparing any numbers, one rule governs all comparisons that follow: a specification sheet describes device behavior, not medical outcomes.

HealthyLine is a consumer wellness brand that develops and sells PEMF mats across multiple formats, controller types, and integrated-technology configurations. This guide focuses on how to evaluate those differences and choose a PEMF mat that fits your needs, while the broader How to Choose PEMF Mats guide explains the full selection framework across product type, specifications, usability, ownership, and buyer fit.

What a PEMF Specification Sheet Actually Tells You

A specification sheet is a hardware engineering disclosure. It describes what a PEMF mat produces electrically under specific operating conditions. That is a meaningful and useful document, but it has a fixed scope. Understanding that scope before reading any numbers prevents the most common and costly comparison errors.

What the Numbers on a Spec Sheet Confirm

One orienting point before the next block: the positive confirmation above and the boundary below work together. Both are required to read a specification sheet accurately.

What a Spec Sheet Cannot Tell You About Health Outcomes

The Core Specification Variables on a PEMF Mat Sheet

Before any cross-brand comparison is possible, the five primary variables on a PEMF specification sheet must be defined. The table below provides a scannable reference. The H3 sections that follow each add the buyer trap and comparison implication the table cells cannot contain.

Specification Term	Unit of Measurement	What It Controls	Common Buyer Trap
Frequency	Hz (hertz, or pulses per second)	The rate at which the electromagnetic pulse repeats	A wider range is an option set, not a guaranteed delivery; access depends on the controller
Intensity	Gauss (G) or microTesla (µT)	The strength of the magnetic field the mat produces	The same number means different things depending on where it was measured and how it was reported
Waveform Type	Named shape (sine, square, sawtooth, or proprietary)	The shape of the electromagnetic pulse	“Proprietary” labels cannot be independently verified without published documentation
Coil Layout	Coil count, sometimes with arrangement details	The number and placement of electromagnetic coils	Coil count without size and coverage data is an incomplete specification
Controller Type	Preset modes or manual numeric settings	Whether the stated frequency and intensity range is accessible to the user	Preset mode names do not disclose the Hz and Gauss values they operate at

 

Defining these terms is necessary, but it is not sufficient for cross-brand comparison. The numbers in any specification sheet only become comparable when the measurement conditions, reporting conventions, and controller access behind them are also known.

Frequency (Hz): What the Range Tells You and What It Does Not

Frequency, expressed in Hz (or pulses per second, on first use), describes how rapidly the mat’s electromagnetic pulse repeats during a session. A stated frequency range, such as 1 Hz to 100 Hz, means the mat can be operated anywhere within that band.

Two important limitations apply. First, access to the full stated range depends entirely on the controller. A mat with a stated range of 1 to 100 Hz may only let you select from three named preset modes, none of which discloses what Hz value it operates at. The range on the spec sheet becomes a theoretical option set rather than an accessible parameter. Second, a wider frequency range is not a medical outcome guarantee. The range tells you about available options; it tells you nothing about what any frequency delivers biologically. Controller type determines whether the stated range is something you can actually use, and that evaluation belongs in a later section of this guide.

Intensity (Gauss and microTesla): The Unit, the Number, and the Missing Context

Intensity describes magnetic field strength (the plain-language phrase for this on first use). It is expressed in either Gauss (G) or microTesla (µT), depending on the manufacturer’s reporting convention.

The intensity figure on a specification sheet cannot be interpreted without knowing two additional pieces of information: where the measurement was taken (at the copper coil inside the mat, or at the mat surface where the user lies), and whether it represents peak output or continuous output during a session. A mat that reports “30 Gauss” and a mat that reports “10 Gauss” may not be making equivalent claims at all, depending on the measurement conditions behind each number. The full explanation of why this is true, and how it changes what the numbers mean in practice, is in the next section.

Waveform Type: What the Pulse Shape Describes and What It Cannot Prove

Waveform describes the shape of the electromagnetic pulse (plain-language phrase on first use). Three common waveform shapes appear on PEMF specification sheets: sine, square, and sawtooth. Each describes how the pulse rises, holds, and falls during each cycle.

No single waveform type has been independently proven universally superior for PEMF applications. This must be stated plainly because marketing language on specification sheets frequently implies otherwise. When a manufacturer describes a waveform as “proprietary” or “optimized,” those claims require independent third-party documentation to be verifiable from the spec sheet alone. Without that documentation, a proprietary waveform label is a marketing designation, not a measurable technical specification. Waveform type is a valid hardware comparison variable when standard waveform names are disclosed; it is an unverifiable variable when the disclosure is limited to a proprietary label without supporting documentation.

Coil Layout: What Coil Count Tells You and What It Leaves Out

Coil layout describes the number and physical arrangement of electromagnetic coils inside the mat (plain-language phrase on first use). Coil count affects how uniformly the magnetic field is distributed across the mat surface during a session.

More coils does not automatically mean better or more uniform coverage. Coil count is a partial specification. A meaningful comparison of coil architecture requires coil count alongside coil size, placement pattern, and coverage area. A mat with 20 small coils spaced widely across its surface may deliver less uniform coverage than a mat with 10 larger coils with overlapping fields. When a specification sheet discloses only coil count without coverage geometry, the buyer is working with an incomplete data point, not a complete specification.

Controller Type: The Specification Variable That Affects Everything Else

Controller type describes the interface used to operate the mat (plain-language phrase on first use). Two primary controller configurations exist. A preset controller uses named mode labels (such as “Relax,” “Energy,” or “Sleep”) that select a predefined operating state. A manual controller allows the user to set specific numeric Hz and Gauss values directly.

Controller type governs whether every other specification on the sheet is actually accessible. A mat that advertises a wide frequency range and high intensity is only delivering on those specs if the controller exposes them to the user. A preset-only controller may be running any Hz and Gauss combination behind each mode name, and without separate published documentation, those values are hidden from the buyer. The full evaluation of this distinction, including what to look for and how transparent manufacturers handle it, is in the disclosure-quality section that follows.

Why the Same Gauss Number Can Mean Different Things on Different Spec Sheets

This is the core comparison problem. Two specification sheets may both state “30 Gauss” and be describing fundamentally different outputs. The reason lies in a physical property of magnetic fields that manufacturers handle inconsistently, and the buyer who ignores it will make inaccurate comparisons every time.

How Magnetic Field Strength Changes with Distance from the Coil

The magnetic field produced by an electromagnetic coil weakens as it travels away from the source. This is a universal physical property, not a product defect. The copper coil inside a PEMF mat is the point of highest field strength. As the field extends outward through the mat’s padding and surface materials and into the space above the mat, its strength decreases. The field at the mat surface, where the user actually lies, is meaningfully weaker than the field at the copper coil that produced it.

This physical reality has a direct consequence for how manufacturers measure and report intensity. If one manufacturer measures intensity at the coil and a second manufacturer measures intensity at the mat surface, they are measuring at different points along that gradient. The first will report a higher number than the second, even if both mats produce equivalent field strength at the body.

Measured at the Coil vs. Measured at the Mat Surface: Why the Same Number Is Not the Same Output

Measuring at the copper coil yields a higher Gauss number than measuring at the mat surface for the same physical device. Comparing two Gauss figures without knowing their measurement locations is comparing numbers from two different points on a gradient, and the comparison is invalid.

Some manufacturers measure at the copper coil because it is the highest field point and produces the largest number. Others measure at the mat surface because that is closer to where the user’s body actually is during a session. Both methods can be honest disclosures, provided the measurement location is stated. When it is not stated, the number is incomplete.

A mat that reports “30 Gauss at the copper coil” and a mat that reports “10 Gauss at the mat surface” are not making equivalent intensity claims. The at-coil number reflects the strongest point inside the device hardware. The at-surface number reflects what the field measures at the point of contact with the user. The at-surface number is closer to what the user actually experiences. If a specification sheet does not state where the measurement was taken, the buyer cannot use the intensity figure for direct comparison. The evaluation question to ask before comparing any Gauss figures is: “Where was this measured?”

Peak Intensity vs. Continuous Output: Another Number That Needs Context

A Side-by-Side Look at How Measurement Context Changes the Comparison

The mechanism above becomes practical when applied to a concrete scenario. The contrast below uses hypothetical mats only.

Mat A

●       Stated intensity: 10 Gauss

●       Measurement location: Measured at the mat surface

●       What this means: The 10 Gauss figure reflects the field strength at the point closest to the user’s body. This is the more user-relevant measurement location.

Mat B

●       Stated intensity: 30 Gauss

●       Measurement location: Measured at the copper coil

●       What this means: The 30 Gauss figure reflects the field strength at the coil, which is the strongest point inside the device hardware and the point furthest from the user in this comparison. The user does not lie at the coil.

Comparison implication: Without knowing that Mat A’s number comes from the surface and Mat B’s number comes from the coil, a buyer will assume Mat B is three times stronger. That assumption is not supported by the numbers as presented, because the numbers describe two different locations in the same physical gradient. Mat B’s coil-level field may be stronger, or the two mats may deliver comparable surface-level output. The spec sheets, as stated without measurement context, cannot answer that question.

This scenario is hypothetical and presented for illustration only. It shows why measurement location must be disclosed before two Gauss numbers can be meaningfully compared. It does not prove that either mat produces superior health outcomes.

How to Evaluate Disclosure Quality on a PEMF Specification Sheet

Understanding the measurement-context problem is only useful if you can apply it to real spec sheets. The questions below convert the mechanism into a practical evaluation framework: what does a complete disclosure look like, what does a preset-only controller hide, what does transparent manual-control disclosure look like, and what do you ask when the sheet is incomplete?

What a Complete PEMF Specification Sheet Discloses

A specification sheet with full disclosure provides five elements, each with its relevant context attached:

●       Frequency range with an access condition: does the controller expose the full range, or are some frequencies locked behind presets?

●       Intensity with measurement location (at coil or at surface) and reporting convention (peak or continuous): a number without both of these context points is incomplete.

●       Coil count with coverage and overlap information: count alone is a partial specification.

●       Waveform type identified by its standard name (sine, square, sawtooth) or, for proprietary waveforms, with independent documentation of the waveform’s characteristics.

●       Controller type identified as manual or preset-based, with preset parameters published separately if applicable.

A sheet that discloses all five elements with their accompanying context is comparably reviewable against another equivalent sheet. Numbers alone, without measurement context and access conditions, constitute incomplete disclosure. When conditions are not equivalent across two spec sheets, you are not comparing equivalent information.

Preset-Only Controllers: When the Spec Sheet Stops Short

A preset-only controller operates through named mode labels. A user selects a mode such as “Relax,” “Energy,” or “Recovery,” and the device runs at a predefined Hz and Gauss combination that the mode is programmed to deliver. The mode name does not disclose what that combination is.

This creates a disclosure gap. Two mats both set to a “Relax” preset may be operating at completely different frequency and intensity combinations. The user has no way to know what parameters the device is delivering during that session, and the spec sheet’s stated frequency range and intensity figure cannot be connected to any particular operating mode without additional published information.

The gap closes when a manufacturer separately publishes the Hz and Gauss values for each preset mode. If that documentation exists and is publicly accessible, preset-mode controllers can be evaluated with the same rigor as manual controllers. If it does not exist, the preset label is marketing language, not a technical specification that can be compared against another mat’s stated parameters. This is a disclosure limitation. It does not mean every manufacturer using preset controllers is acting in bad faith; it means the spec sheet is incomplete for comparison purposes until that information is provided.

Manual Controls: When the Specification Sheet Shows Its Work

A manually adjustable controller lets the user set specific operating parameters directly, such as frequency. More advanced controllers may also expose intensity, waveform, or other settings. When a mat has a manual controller, the spec sheet’s stated frequency range corresponds to parameters the user can actually select, verify on the controller display, and compare directly against another mat’s stated specifications.

This is what transparent disclosure looks like in practice. The buyer can read the spec sheet, set the controller to a specific Hz and Gauss combination, and confirm that the device is operating at the stated parameter. There is no hidden mapping between a mode name and an underlying numeric value.

HealthyLine’s adjustable frequency and intensity controller (where supported by the model) is a clear example of this kind of transparent manual disclosure. HealthyLine controllers expose different levels of manual control depending on the model. Jet and Rainbow 4th let you set frequency manually and save configurations to four preset / memory buttons, while Platinum Advanced adds manual intensity control, waveform selection, and custom multi-stage programming. You are not relying on the manufacturer’s internal preset definitions. The spec sheet’s stated range is the same range you can access, adjust, and verify during a session.

Controller Type: Preset-Only vs. Manual

Preset-Only Controller

●       What the user sees: A named mode label (for example, “Relax” or “Energy”)

●       What is hidden: The actual Hz and Gauss values the device is delivering in that mode

●       Buyer implication: The spec sheet’s stated range cannot be connected to any operating state unless the manufacturer separately publishes preset parameters

Manual Controller

●       What the user sees: Specific numeric Hz and Gauss values on the controller interface

●       What is disclosed: The exact operating parameters during each session

●       Buyer implication: The spec sheet’s stated range corresponds directly to what the user can set and verify; cross-brand comparison becomes possible on equal terms

Questions to Ask When a Specification Sheet Is Incomplete

When a spec sheet omits key measurement details, you are comparing inferences, not verified disclosures.

●       Was measurement location stated? Does the spec sheet specify whether the Gauss figure was measured at the copper coil or at the mat surface?

●       Was the reporting convention stated? Does the spec sheet specify whether the intensity figure is peak output or continuous output?

●       Are preset Hz and Gauss values published separately? If the controller uses preset modes, has the manufacturer published the actual frequency and intensity values for each mode?

●       Is coil count accompanied by coverage information? Does the spec sheet include coil size, placement pattern, and coverage area alongside the count?

●       Does the manufacturer provide documentation that allows the spec sheet to be verified? This includes an operating manual, controller guide, and technical product registration.

●       Are physical dimensions and weight disclosed? These matter for format comparison and are relevant if portability is a factor in the purchase decision.

Common Spec Sheet Misreads: What to Check Before Comparing Numbers

These are the most common misreads on PEMF specification sheets. The sections above explain each one in more detail.

●       Higher Gauss = stronger mat. Measurement location must be stated before Gauss numbers can be compared. Ask: “Where was this Gauss figure measured, at the coil or at the mat surface?”

●       The stated Gauss is the delivered output. Peak and continuous reporting produce different numbers for the same device. Ask: “Is this peak or continuous output?”

●       Preset modes state the Hz and Gauss. Preset labels do not disclose operating parameters unless separately published. Ask: “Does the manufacturer publish Hz and Gauss values for each preset mode?”

●       A spec sheet proves health outcomes. Spec sheets describe hardware output, not biological responses. Ask: “What does this spec confirm about the device’s electrical behavior, not about health benefits?”

●       “FDA Registered” means FDA approved. Registration is an administrative listing. FDA approval requires a substantive safety and efficacy review. Ask: “Is this FDA registered (listed with the agency) or FDA approved (reviewed for safety and effectiveness)?”

●       Higher coil count = better uniform coverage. Coil size and coverage geometry are needed for a meaningful comparison. Ask: “What is the coil size and coverage area alongside the count?”

Physical Format and Build: Matching the Mat Category to Your Needs Before Comparing Specs

Comparing a PEMF-only mat to a multi-therapy mat using the same specification filters is a category mismatch. The two mat types are built differently, weigh differently, and serve different use environments. Selecting the correct category before comparing spec numbers prevents an apples-to-oranges comparison that no amount of Gauss or Hz analysis can fix.

Why Format and Category Selection Comes Before Spec Comparison

The correct sequence for evaluating PEMF mat specifications is: category selection first, disclosure quality second, specific numbers third. Category selection means answering questions such as: Do you need a PEMF-only system, or are you looking for a mat that also integrates additional modalities such as far infrared heating or gemstone therapy? What mat size fits your use environment? Do portability and storage matter?

A common buyer error is comparing a PEMF-only mat’s Gauss rating directly to a multi-therapy mat’s Gauss rating and treating the difference as a performance gap. It is not a performance gap; it is a category difference. Once category is matched, the spec comparison filters become valid. Before category is matched, the comparison produces misleading conclusions.

PEMF-Only Mats: Lighter Build, Focused Output

A PEMF-only mat is a single-modality design (plain-language phrase on first use). It integrates electromagnetic coils to produce pulsed magnetic fields and does not combine additional therapy layers such as far infrared heating elements or gemstone layers.

The physical consequence of this architecture is a lighter, thinner, and typically more flexible mat than multi-therapy alternatives. PEMF-only mats are generally more suited to portability, travel, or environments where storage space or flexibility of use location matters. A shorter specification sheet on a PEMF-only mat reflects its single-modality design, not a quality deficit. A PEMF-only mat that delivers well-disclosed frequency range, intensity with measurement context, and a transparent controller is a more comparable product than a multi-therapy mat that buries its parameters in preset mode labels.

Multi-Therapy Mats: More Modalities, More Physical Complexity

A multi-therapy mat integrates PEMF alongside additional modalities, typically including far infrared (FIR) heating elements, gemstone layers, and additional shielding materials. Each additional layer is physically integrated into the mat’s construction. The cumulative result is a mat that is heavier and stiffer than a PEMF-only equivalent.

This is not a design flaw. Weight and stiffness are structural consequences of integrating multiple therapy layers into a single mat body. Each additional functional layer adds material mass. A mat combining electromagnetic coils, heating elements, gemstone inlays, and shielding layers will be heavier than one containing coils alone, for the same reason that a coat with more insulation layers is heavier than a single-layer jacket.

HealthyLine holds a U.S. utility patent covering aspects of its multi-layer heated PEMF mat architecture. That patent reflects an engineered integration decision, not a random accumulation of features. When evaluating a multi-therapy mat’s specification sheet, a longer list of modalities reflects the mat’s multi-layer build. It does not automatically mean stronger PEMF output. Buyers in this category should plan for heavier mats and less portability compared to PEMF-only formats.

PEMF-Only vs. Multi-Therapy: Physical Format Comparison

PEMF-Only Mat

●       Typical weight and flexibility: Lighter and more flexible; easier to store, fold, or transport

●       Integrated modalities: Electromagnetic coils producing pulsed magnetic fields only

●       Best fit use case: Portability-priority environments, travel, single-modality users, or situations where storage space is limited

Multi-Therapy Mat

●       Typical weight and flexibility: Heavier and stiffer due to additional integrated layers; less portable

●       Integrated modalities: Electromagnetic coils plus far infrared heating elements, gemstone layers, and additional shielding

●       Best fit use case: Stationary home or professional use environments where multiple modalities are desired and weight is not a constraint

How Specification Density and Features Relate to Price Tiers

Warranty, Support, and After-Sale Documentation as Comparison Criteria

Specification sheets describe device hardware output on the day of purchase. Warranty terms, customer support, and ownership documentation describe what happens after the purchase, over the service life of the mat. These non-technical variables are legitimate comparison criteria because they affect total ownership value.

Warranty Length and Coverage: A Specification That Outlasts the Controller Manual

Warranty terms vary significantly across PEMF mat manufacturers. Length, scope, and what is actually covered (mat construction defects, controller failures, cosmetic damage, or some combination) are all variables that should be compared alongside device output specs.

A longer, broader warranty signals a manufacturer’s confidence in the product’s durability. A warranty that covers both mat construction and controller function is more comprehensive than one that covers only the mat body. When a warranty is short or limited in scope, the buyer is accepting more risk that repair or replacement costs will fall outside the coverage period.

HealthyLine offers a five-year limited warranty for mats, which represents a strong reference point for warranty comparison in the PEMF mat category. When comparing warranty terms across brands, note both the duration and the scope. A five-year limited warranty that covers specific defects is a different coverage level than an unqualified warranty without defined terms.

Customer Support, Product Documentation, and Ownership Resources

Support locality affects how a warranty is actually fulfilled. A U.S.-based customer support team can resolve issues using the same business hours, language, and regulatory context as the buyer, reducing resolution time for warranty claims, technical questions, and controller troubleshooting.

HealthyLine provides U.S.-based customer support, which directly affects the practical experience of resolving ownership issues after purchase. International or remote-only support structures may be slower to respond to warranty claims, harder to reach during business hours, or less familiar with local regulatory conditions.

Reading Regulatory and Certification Language on a Specification Sheet

Product pages and specification sheets for PEMF mats frequently include regulatory language such as “FDA Registered.” Understanding exactly what that language means, and what it does not mean, prevents a common and significant misread.

What “FDA Registered” Means on a Product Page or Spec Sheet

“FDA Registered” means the manufacturer or its facility is listed with the U.S. Food and Drug Administration as a producer of medical devices or regulated products. This is an administrative designation. It means the company has completed a required administrative listing process.

FDA registration is not a review of the device’s medical claims. It is not a determination of safety or efficacy for any health condition. It does not reflect FDA evaluation of the product’s specifications, output levels, or wellness applications.

FDA Registration vs. FDA Approval: Why the Difference Matters When Reading Spec Sheets

FDA registration and FDA approval are categorically different designations, and the difference is directly relevant to how you read a spec sheet.

FDA approval (or clearance through equivalent review pathways) requires the FDA to conduct a substantive evaluation of a device’s safety and effectiveness for its stated intended use. That review involves evidence submission, regulatory examination, and agency-level determination. It is a process with a meaningful substantive hurdle.

FDA registration requires no such review. Completing registration means a company has satisfied an administrative filing requirement. It does not mean the FDA has examined, tested, endorsed, or approved the device’s medical claims, wellness applications, or specification figures.

“FDA Registered” accurately describes an administrative status. It is not FDA endorsement of any claim made on the product page or specification sheet. When you see “FDA Registered” on a spec sheet, treat it as a compliance filing designation, not a medical efficacy signal. Do not use it to compare medical credibility across brands, and do not treat it as equivalent to approval or clinical review of any kind.

FAQ

What is a good Gauss rating for a PEMF mat?

There is no single universally “good” Gauss rating independent of measurement context. What matters is whether the Gauss figure was measured at the mat surface (closer to what the user experiences during a session) or at the copper coil (the device’s highest field point but the farthest location from the user), and whether the figure represents peak or continuous output. A surface-measured Gauss figure is more relevant to what the user actually receives than a coil-measured figure of a higher number. This guide does not assign Gauss levels to specific health conditions. The right intensity range for your situation depends on intended use and verified measurement context, not a universal wellness dosage.

If one spec sheet uses Gauss and another uses microTesla, are they measuring different things?

Gauss and microTesla are two unit conventions for measuring the same thing: magnetic field strength. They are not different therapy types, and switching between them does not change what the mat delivers. 1 Gauss equals 100 microTesla. When comparing a mat specified in Gauss to one specified in microTesla, apply that conversion before comparing the numbers. A mat rated at 10 Gauss and a mat rated at 1,000 microTesla are stating the same intensity in different units.

Does “FDA registered” mean a PEMF mat is medically approved?

No. “FDA Registered” means the manufacturer or facility is listed with the FDA as part of an administrative filing requirement. It does not mean the FDA has reviewed, tested, or approved the device’s medical claims or effectiveness for any health condition. FDA approval requires a substantive safety and effectiveness review that registration does not involve. Buyers should not use “FDA Registered” as a medical efficacy comparison signal when evaluating PEMF mat specification sheets.

Can I compare two mats directly if both list the same Hz range and Gauss?

Two mats listing the same Hz range and Gauss are only directly comparable if three conditions are met. First, the Gauss figures must have been measured at the same location (both at the copper coil or both at the mat surface). Second, both figures must represent the same reporting convention (both peak or both continuous). Third, both mats must have a controller that exposes the full stated Hz range to the user rather than hiding it behind preset mode labels. If any condition is undisclosed, you are comparing inferences rather than verified specifications. Use the disclosure evaluation questions from the checklist above to identify which conditions are unmet before treating the numbers as equivalent.

What should I prioritize when comparing PEMF mats: Hz, Gauss, waveform, or something else?

Start with category match before looking at any numbers. Determine whether you are comparing PEMF-only mats or multi-therapy mats, what mat size fits your use environment, and whether portability is a factor. Once you are comparing within the same category, check disclosure quality first: does the spec sheet state measurement location, reporting convention, and controller access? Only after those disclosure conditions are equivalent does direct numerical comparison of Hz and Gauss become valid. Within equivalent disclosures, Hz and Gauss are the primary comparison variables. Waveform type and coil layout are secondary. Controller type determines whether the stated Hz range is something you can actually access and verify during use. This is a hardware comparison process, not a medical protocol selection.