Cold Laser Supplies LogoCold Laser Supplies LogoCold Laser Supplies Logo
MR4 Activ | Multi Radiance Super Pulsed Cold Laser System
MR4 Activ | Multi Radiance Super Pulsed Cold Laser System
MR4 Activ | Multi Radiance Super Pulsed Cold Laser System

MR4 Activ | Multi Radiance Super Pulsed Cold Laser System

30 Day Easy Return Policy 
Cold Laser Supplies is so confident in our products we are proud to offer our 30-Day Easy Return Policy. All domestic products (except the PowerMedic GigaLaser) are available with a 30-day delivery date money-back guarantee. If for any reason you are not completely satisfied with your order within 30 days from your delivery date, simply call for a return authorization number and Cold Laser Supplies will send you a return shipping label. No restocking fees are applied.

Other cold laser distributors will charge you 10-30% of the purchase price in restocking fees. Their return window also starts on the purchase date not the date of delivery (make sure you check before you purchase). 

You can find our complete return policy here
Free Shipping
Free shipping for all orders within the US. Shipping takes between 3-8 business days depending on product and destination.

Have Questions?
Give us a shout if you have any other questions and/or concerns.
Phone: 1-888-824-7558
No Sales Tax 
No Sales Tax is charged for any purchase outside the state of California and Hawaii.

Have Questions?
Give us a shout if you have any other questions and/or concerns.
Phone: 1-888-824-7558
Quality Customer Support
We take pride in delivering above and beyond for our clients.

Have Questions?
Give us a shout if you have any other questions and/or concerns.
Phone: 1-888-824-7558


The Multi Radiance MR4 Activ: Maximum Performance and Portability for Pain Relief and Faster Recovery 


The Multi Radiance MR4 Activ is the next evolution in Cold Laser Therapy. MR4 Activ is a portable, non-invasive laser therapy device that uses a combination of laser and LED light to reduce pain and inflammation. 

Super Pulse Laser Technology

The device uses Multi Radiance's patented Super Pulse Technology to synergize Blue Light, Red Light, Infrared Light, and Infrared Super Pulsed Laser to penetrate deep into the tissue to target the source of pain. The device delivers a high-energy pulse in a very short duration, typically in the microsecond range. This results in a high peak power output and a very fast thermal response time, which allows for greater penetration and more efficient treatment while keeping the device cool to the touch and very safe.

FDA Cleared 

The MR4 Activ is FDA-cleared for temporary relief of muscle pain, temporary relief of joint pain, temporary relief of arthritis, temporary relief of muscle spasms, reduced muscle stiffness, increased muscle tissue relaxation, and temporary increase of local blood circulation. 

6 Treatment Settings 

The MR4 Activ has 6 frequency settings: 5Hz, 50Hz, 1000Hz, 1000Hz-3000Hz, 5-250Hz, 5000Hz. These settings allow users to customize a stimulatory (cell restoration and regeneration) or inhibitory (pain relief) response.

A sample treatment plan may involve higher frequency settings to treat the acute pain, followed by lower frequency settings to stimulate healing.

LaserSweep Technology

Two specific settings (1-250Hz) and (1000-3000Hz) use advanced targeting algorithms to deliver multiple wavelengths and pulse frequencies. These 'sweeping' settings deliver photobiomodulation at different depths and pulses, which prevents the body from adapting or creating a tolerance for the treatment. The LaserSweep setting allows the MR4 Activ to provide more efficient treatments and cover a broader range of therapeutic conditions.

Recommended Treatments

A protocol guide is included and provides treatment settings, use,  and frequency guidelines for the following conditions:

Muscle Spasm Muscle and Joint Pain
Arthritis Feet Stiffness
Upper Extremity Stimulation Lower Extremity Stimulation
Increase Local Blood Circulation  Temporomandibular Joint Pain


At almost twice the power of the TQ Solo, the MR4 Activ blends superior performance with convenient portability allowing you to take professional-grade Cold Laser Therapy to work, the gym, or any room in your house. Stop letting muscle and joint pain slow you down; get healthy and active again with Multi Radiance Medical's MR4 Activ!

FREE Laserpuncture & Muscle Trigger Probes Set

The auricular, corporal, cosmetic, and utility probes are fiber optic guides and enhance light transfer into the targeted tissue. ($495 value)

FREE 3-Month Access To Laser Therapy University

Cold Laser Supplies has partnered with Multi Radiance Medical to provide our customers with a Free 3-month subscription to Laser Therapy University a sponsored tutorial website designed for Multi Radiance products like the TQ Solo.

Your membership will give you access to prerecorded webinars, an extensive protocol library, and a clinical database to enhance your MR4 Activ treatments. A $200 value, this offer is FREE and exclusively for Cold Laser Supplies' customers.

  • 1 MR4 Activ Cold Laser Device
  • 25,000mW of Peak Super Pulsed Power
  • 4 Different Wavelengths: Blue (470 nm), Red (640 nm), Infrared (875 nm), and Super Pulsed Infrared (905)
  • 6 Different Pulse Frequencies
  • Operator Manual, User Guide, and Protocol Guide
  • 1 Hard Body Case
  • 2 Protective Eye Glasses
  • 1 AC Adapter 
  • Dimensions: 20cm x 6cm x 7cm
  • Weight: 0.5 lbs
  • 2-Year Manufacturer Warranty
  • FREE UPS Shipping (3-5 Business Days)
  • FREE Acupuncture & Muscle Trigger Probe Set ($495 Value)
  • FREE 3-Month Laser Therapy University Subscription ($200 Value)
  • FREE BONUS eBook "22 Acu-Point Healing System, 250 Protocols Made Easy" ($98 Value)
    Not enough items available. Only [max] left.
    Add to WishlistBrowse WishlistRemove Wishlist
    Shopping cart

    Your cart is empty.

    Return To Shop

    Add Order Note Edit Order Note
    Estimate Shipping
    Add A Coupon

    Estimate Shipping

    Add A Coupon

    Coupon code will work on checkout page

    MR4 Activ | Multi Radiance Super Pulsed Cold Laser System