
3-PERSON RED LIGHT SAUNA
Amplify RED III
Support cellular energy to recover, perform and keep doing more of what you love with purposefully integrated red + near-infrared light and the deep, enveloping heat of Sunlighten infrared.
Trusted by thousands of verified Sunlighten customers




Four layers of energy. One purposefully engineered sauna experience.
- The light therapy
Visible red + invisible near-infrared light deliver photobiomodulation (PBM), purposefully integrated throughout the sauna around how light reaches your body.
- The therapeutic infrared
Sunlighten's patented far infrared technology provides the foundational 99% emissive infrared energy at the heart of every session.
- The intense heat
Full-spectrum infrared adds greater heat intensity when you want it, reaching up to 77°C under appropriate conditions.
- The added infrared layer
Mineral-infused CELLIANT® fabric in the heater covers adds another layer of infrared energy to the experience.
AMPLIFY III
Tour Amplify III, our 3-person infrared sauna
- Spacious interior for solo use or up to three people
- High-intensity heat with full-spectrum infrared
- Built by leaders in light science, focused on comfort and build quality
- Known for the most intense heat across our sauna lineup
- Patented SoloCarbon® heaters for deep infrared absorption
- Additional halogen heaters to increase overall heat
- Larger heater panels with refined system logic
- Heat-tight double-pane door to maintain temperature
- Designed to support performance, recovery, and long-term use
Talk to a Sauna Consultant
Consult with a Sauna Consultant to get clear answers, personalised guidance, and help finding the right sauna for your goals, space, and budget.

Inside the homes of Sunlighten owners





Industry-leading infrared saunas
Setting the standard in light scienceWith 50 owned and pending patents, and with saunas endorsed by over 200 scientists, doctors and longevity experts, Sunlighten is a trusted brand across the globe.
Clinically informed, expert approvedSunlighten’s infrared light therapy is grounded in published research and expert perspectives, so you can choose with confidence.
Scientifically-verified, safe and cleanOur saunas are independently tested and third-party verified to emit less than 1 milligauss—well below the 10mG industry standard for “ultra-low” EMF exposure.
Purposefully designed to elevate your spaceBuilt from quality materials and patented technology, our saunas complement luxury interiors while offering the depth of an elite wellness tool.

Why experts trust Sunlighten
Dr. Mark Hyman, functional medicine doctor, bestselling author, and longevity expert, has trusted Sunlighten infrared saunas for over 20 years. Learn why he claims Sunlighten has the only saunas that deliver truly transformative results.
Frequently asked questions about the Amplify RED III, our 3-person sauna

Experience infrared from the global leaders in light science
Sunlighten is the whole-body longevity tool trusted by over 200 wellness experts and thousands of longevity optimizers, biohackers and health enthusiasts.
37 clinical studies and third-party testing supporting detox, heart health, recovery, and more
Proven, near-perfect emissivity that delivers 95-99% of therapeutic infrared wavelengths
The only infrared sauna with PulseIQ, the patented intelligent infrared platform advancing infrared delivery and control
30+ patents shaping the future of light and infrared innovation
The difference 200,000+ others feel
Newsworthy Recognition
As pioneers in light science, we are committed to setting the highest standards of quality. Our innovative approach to wellness empowers people to feel their best and enjoy more of what they love. This dedication to excellence has earned us noteworthy recognition, which we are excited to share with you.







Get Instant Pricing
Discover which infrared sauna will help you reach your wellness goals.

The Amplify III sauna fits an active, busy lifestyle and attitude for one person or up to three. It maximises your sauna time. You’ll feel like your session is productive because inside your cabin the higher heat produces a noticeable sweat. You’ll know your time was well spent because Sunlighten’s unique SoloCarbon far infrared is clinically proven to penetrate deeper to increase core body temperature. Extend your workout benefits while you recover. Remove the bench to do sit-ups, crunches or stretches while the infrared waves penetrate deep, fast and meaningfully to detoxify your body, increase circulation, aid muscle recovery and help relieve pain. Built-in chromotherapy adds another layer of light therapy for energetic balance and mental well-being. And, set up and assembly are no sweat using Sunlighten’s Magne-Seal locking system. It’s an investment in your present and long-term well-being. Amplify III makes it count.