Sunlighten Amplify III 3-Person Full Spectrum Infrared Sauna for Indoor Home Recovery
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What Happens After Purchase
We help make freight delivery feel simple, clear, and supported from checkout to arrival.
Order placed + specialist follow-up
Your order is placed securely online, then a sauna specialist contacts you to review details and help prepare you for delivery.
Freight carrier schedules delivery
Curbside freight delivery is scheduled directly with you, so you know when to expect your sauna.
Tracking, prep guidance + support
You’ll receive tracking and preparation guidance before arrival, with Core Human Health support available before and after delivery.
Enjoy relaxing in your new sauna
Sunlighten Amplify III Full Spectrum Infrared Sauna
A spacious three-person full spectrum infrared sauna designed for a hotter, faster, and more immersive Sunlighten experience. The Amplify III pairs patented SoloCarbon® far infrared technology with high-intensity full spectrum heaters, creating a refined indoor sauna for relaxation, sweating, shared wellness, and performance-focused recovery routines.
Spacious, high-intensity infrared for home wellness.
Designed for shared use, stretching out solo, or a more open sauna session.
Best for home gyms, wellness rooms, recovery spaces, and refined indoor sanctuaries.
Combines SoloCarbon® far infrared heaters with high-intensity full spectrum heaters.
Requires a dedicated 240V / 20A circuit and NEMA 6-20 outlet.
Includes 2” feet and a taller interior height for comfort.
Available in two premium wood finishes to suit your space.
Ships in large protective cartons and requires delivery planning.
Ultra low EMF, chromotherapy, deep bench seating, and magnetic assembly.
A larger, more immersive Amplify model for buyers who want space and intensity.
Core Human Health selected the Sunlighten Amplify III because it offers the stronger, more immersive Amplify experience in a larger three-person format. It is ideal for buyers who want more interior room without moving into an oversized sauna footprint.
With 7 patented SoloCarbon® infrared heaters, 3 full spectrum high-intensity heaters, ultra low EMF design, chromotherapy, deep benches, taller interior height, and solid wood construction, the Amplify III is a strong fit for customers creating a serious home wellness or recovery-focused space.
- Excellent choice for shared sauna sessions or spacious solo use
- Designed for a hotter, faster, full spectrum infrared experience
- Strong fit for home gyms, wellness rooms, and performance-focused spaces
Who this sauna fits best.
- Buyers wanting a three-person full spectrum infrared sauna
- Couples, families, or users who want extra room to stretch out
- Home gyms, wellness rooms, recovery rooms, and luxury indoor spaces
- Performance-minded users building a consistent sweating and recovery routine
- Those who want a hotter, more immersive infrared sauna experience
More space, more heat, more ritual.
Designed for a layered infrared experience using both SoloCarbon® and full spectrum heater technology.
A more spacious cabin for shared sessions, stretching out, or a more open solo sauna experience.
High-intensity full spectrum heaters help create a hotter, faster, and more immersive sauna ritual.
Built-in lighting helps set a calmer tone for relaxation, decompression, and daily wellness routines.
Engineered with Sunlighten’s ultra low EMF approach for a cleaner, more reassuring sauna environment.
Available in basswood or eucalyptus with a clean, elevated look for premium indoor spaces.
Specifications, heating, electrical, and features.
Dimensions & Capacity
| Brand / Model | Sunlighten Amplify III |
| Sauna Type | Indoor full spectrum infrared sauna |
| Capacity | 3 person |
| Exterior Dimensions | 62.3″ W × 45.9″ D × 77.7″ H, includes 2″ feet |
| Interior Dimensions | 56.8″ W × 39.9″ D × 70.3″ H |
| Bench Dimensions | 56.7″ W × 20.3″ D × 4.9″ T |
| Bench Height | 19.5″ from floor |
| Door Opening | 28″ |
| Recommended Clearance | 4″ on the sides and 12″ above |
| Weight | Basswood: 546 lbs. | Eucalyptus: 642 lbs. |
Heating Technology
The Sunlighten Amplify III uses full spectrum infrared technology for a hotter, faster, and more immersive sauna experience. It includes 7 patented SoloCarbon® infrared light therapy heaters and 3 full spectrum high-intensity heaters. Amplify models do not include a floor heater.
| Infrared Technology | SoloCarbon® Infrared Technology + full spectrum infrared |
| SoloCarbon® Heaters | 7 patented SoloCarbon infrared light therapy heaters |
| Full Spectrum Heaters | 3 full spectrum high-intensity heaters |
| Floor Heater | No floor heater |
| Hybrid / Traditional Heat | No. This model is a full spectrum infrared sauna, not a traditional or hybrid sauna. |
| Can Heat Types Run Together? | The infrared heater system is designed to operate as part of the Amplify full spectrum experience. It is not a traditional + infrared hybrid sauna. |
Electrical Requirements
The Amplify III requires a dedicated 240V / 20A circuit and NEMA 6-20 outlet. The sauna must be plugged directly into the wall outlet. Do not use a power strip, extension cord, or converter.
| Voltage | 240V |
| Power | 3280W |
| Amperage | 13.67A |
| Circuit | Dedicated 240V / 20A circuit required |
| Outlet Type | NEMA 6-20 |
| Cord Location | 10′ cord exits from the back left of the roof when facing the sauna |
| Hardwired? | No hardwiring is typically required when the proper dedicated NEMA 6-20 wall outlet is installed. |
| Breaker Note | Assembly guide notes that a GFCI or dual-function AFCI/GFCI breaker may be required depending on code. |
Important: Please confirm final electrical requirements with the current manufacturer specification sheet and a licensed electrician before installation.
Materials & Finish Options
The Amplify III is available in basswood or eucalyptus. Both options offer a clean, premium appearance suited for elevated indoor wellness spaces.
| Wood Options | Basswood or Eucalyptus |
| Construction | Solid wood construction |
| Eucalyptus | Ultra-premium appearance, durable, sustainable, renewable |
| Basswood | Contemporary aesthetic, hypoallergenic, FSC-certified |
| Wood Characteristics | Natural grain, tone, color variation, and small changes over time may occur |
Panel Dimensions
| Roof Panel | 62.4″ W × 45.9″ D × 3″ T |
| Floor Panel | 61.8″ W × 45.3″ D × 2.6″ T |
| Front Wall, Including Glass | 57.3″ W × 71″ H × 2″ T |
| Glass Door | 28″ W × 68.4″ H × 1.5″ T |
| Back Wall | 57.3″ W × 71″ H × 1.8″ T |
| Right Wall | 44.7″ W × 71″ H × 2.2″ T |
| Left Wall | 44.7″ W × 71″ H × 2.2″ T |
| Bench | 56.7″ W × 20.3″ D × 4.9″ T |
Measure all doorways, hallways, stairways, and tight turns before delivery due to large panel sizes.
Included Features
- 7 patented SoloCarbon® infrared light therapy heaters
- 3 full spectrum high-intensity heaters
- Ultra low EMF design
- Chromotherapy lighting
- Patented magnetic locking system for easier assembly
- Solid wood construction
- Deep bench seating
- Taller interior height for a more comfortable experience
- Available in basswood or eucalyptus
Shipping Carton Dimensions
| Floor / Roof / Hardware / Bench Carton | 14″ W × 51″ D × 67″ H |
| Front / Back Wall Carton | 8″ W × 61″ D × 75″ H |
| Left / Right Wall Carton | 8″ W × 49″ D × 75″ H |
Warranty Information
At Core Human Health, Sunlighten saunas are backed by the manufacturer’s warranty coverage. Residential cabin sauna warranty coverage generally includes 7 years on cabinetry and heaters, 3 years on controls, and 1 year on glass doors and audio components.
Commercial coverage may differ. Please review the full warranty section and manufacturer warranty details before purchasing. Warranty terms, limitations, exclusions, freight coverage, labor exclusions, electrical requirements, and proper-use conditions may apply.
Plan your delivery with confidence.
Freight Delivery, Receiving & Assembly Notes
Sunlighten saunas are carefully packaged and freight-shipped in large protective panels. Once ordered, most saunas ship within 3 days. The final-mile carrier will contact you directly to schedule a delivery appointment.
Support before and after you order.
Use AFFIRM or SHOP PAY at checkout to take advantage of 0% interest for 3 months, if you qualify.
Need more time? Choose from flexible payment plans of 3, 6, 12, 18, or 36 months with competitive interest rates ranging from 10% to 36% APR, based on approval.
This Sunlighten sauna is backed by the manufacturer’s warranty. Please review the warranty section and full warranty details for coverage, exclusions, and proper-use requirements.
Our experts can answer questions about products, features, electrical needs, freight delivery, installation planning, and choosing the right sauna for your space.
Contact Us TodayCommon questions about the Sunlighten Amplify III.
Is this sauna indoor or outdoor?
The Sunlighten Amplify III is best suited as an indoor full spectrum infrared sauna. It works well in home gyms, wellness rooms, recovery rooms, finished basements, and dedicated indoor relaxation spaces.
How many people fit in the Amplify III?
The Amplify III is designed as a three-person sauna. It is also a strong choice for one or two people who want a more spacious, immersive sauna experience.
What type of heat does it use?
The Amplify III uses full spectrum infrared heat. It includes 7 patented SoloCarbon® infrared light therapy heaters and 3 full spectrum high-intensity heaters.
Is it hybrid, traditional, or infrared?
The Amplify III is an infrared sauna. It is not a traditional sauna and it is not a hybrid sauna with a traditional electric heater. It is designed around full spectrum infrared and SoloCarbon® infrared technology.
What electrical setup does it require?
The Amplify III requires a dedicated 240V / 20A circuit and NEMA 6-20 outlet. Your electrician should confirm the circuit, breaker, outlet, and placement before installation.
Does it need to be hardwired?
No hardwiring is typically required when the proper dedicated NEMA 6-20 outlet is installed. The sauna must be plugged directly into the wall outlet and should not be used with an extension cord, power strip, or converter.
How is it delivered?
The sauna ships by freight in large protective cartons on a pallet. The final-mile carrier will contact you to schedule delivery after the shipment reaches your local area.
Is assembly required?
Yes. Assembly is required after delivery. The patented magnetic locking system is designed to make assembly easier, but the panels are large and heavy, so two or more people should be available.
Resources
Amplify III Spec sheet
Amplify III Assembly guide
Amplify III Specifications
Learn More About the Amplify Series +
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Featured Infrared Sauna Collection
Sunlighten Amplify
A more elevated full-spectrum infrared sauna experience, designed for those who want deeper warmth, stronger performance, and a space that feels as beautiful as it is intentional.
The Amplify Collection brings together advanced infrared technology, premium craftsmanship, and a more immersive heat experience — making it a standout choice for clients creating a serious wellness space at home.
Why We Chose Sunlighten
The infrared brand that helps set Core Human Health apart
At Core Human Health, we believe the best wellness spaces begin with better choices. We do not feature products simply because they are available — we curate what we believe reflects a higher standard in quality, experience, and long-term value.
Sunlighten is one of the most recognized names in infrared sauna innovation, and the Amplify Collection is one of the clearest examples of why. It offers a more elevated full-spectrum experience for clients who want more than a basic infrared box in the corner of a room.
This is the kind of sauna chosen by customers who care about how something performs, how it is made, and how it feels to live with every day.
What Makes Amplify Different
A more powerful and refined infrared experience
The Amplify Collection was designed for those who want their sauna experience to feel more immersive, more intentional, and more aligned with a higher level of wellness living.
Full-Spectrum Infrared
A broader infrared experience designed for clients who want a more complete and versatile wellness ritual.
Patented Technology
Built around Sunlighten’s signature infrared innovation for a sauna experience that feels purposeful and premium.
Elevated Heat Experience
Designed for those who want sessions that feel richer, warmer, and more immersive from start to finish.
Luxury Home Wellness
An ideal fit for customers designing a home environment that feels restorative, beautiful, and well considered.
Craftsmanship & Materials
A sauna that feels premium before you ever step inside
For many customers, trust begins with the build. The Amplify Collection reflects a more elevated approach to sauna design, where materials, finish, and overall presence matter just as much as performance.
This is part of what makes Sunlighten so compelling. The experience feels considered from every angle — from the warmth of the interior to the visual calm of the overall design.
The Infrared Experience
Why full-spectrum matters
One of the defining features of the Amplify Collection is its full-spectrum infrared experience. For the customer who wants more than entry-level infrared, this offers a more layered and complete approach to daily sauna use.
Near Infrared
Supports an invigorating and surface-level warmth experience that helps make sessions feel energizing and intentional.
Mid Infrared
Often associated with comfort, circulation, and muscle relaxation, adding another layer to the overall sauna experience.
Far Infrared
Known for the deeper penetrating warmth many clients look for when choosing a premium infrared sauna for home.
Designed to Support Recovery & Longevity
More than heat. A better daily ritual.
The best sauna pages do more than describe a product. They help a customer picture the way it will feel to use it, live with it, and return to it as part of a larger wellness lifestyle.
A More Immersive Session
Designed for those who want their infrared sauna to feel richer, deeper, and more substantial than a basic alternative.
Support for Recovery
A strong fit for wellness routines centered on restoration, relaxation, and physical recovery.
Consistency at Home
Creates an elevated daily ritual for clients who want wellness to feel built into the rhythm of everyday life.
Luxury That Feels Earned
A premium wellness investment for customers who want both beauty and purpose in the products they bring home.
For the Customer Who Wants More
A sauna that reflects the life you are building
The Amplify Collection is especially well suited for wellness-minded homeowners, high performers, and clients designing a home environment that supports both recovery and longevity.
It belongs in spaces where quality matters, where daily habits matter, and where the goal is not simply to own a sauna — but to create a more intentional way of living.
The Core Human Health Difference
Curated with more care. Chosen with more intention.
We feature products we believe in, and we help clients approach wellness purchases with more clarity and confidence. That means a more curated selection, more thoughtful guidance, and a standard that goes beyond simply listing what is available online.
Curated Selection
We choose brands that reflect quality, longevity, and a more elevated wellness standard.
High-Touch Guidance
We help clients think through size, use, layout, and the larger experience they want to create at home.
Wellness System Thinking
We view the sauna as part of a more complete recovery and longevity environment, not as a standalone purchase.
A More Confident Purchase
For premium wellness investments, trust matters. We aim to make the experience feel more informed and more personal.
“Invest in a recovery ritual you’ll return to.”
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