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taVNS Research Device

The Phoenix® CR-100 is designed specifically to produce high-quality transcutaneous auricular vagus nerve stimulation (taVNS) data from human clinical trials  

Easy-to-use & Portable

No hands needed during stimulation sessions


Use the CR-100 device with minimal interruption to your daily life 

Only charge once per week!

Fully programmable

Design & save custom programs 

Adjust stimulation parameters

Choose stimulation ports

Select when to calibrate  

Measure impedence 

Track adherence

Download data


Impedance Monitoring

Monitors resistance to stimulation in real time

Ensures proper device usage and optimal stimulation as defined in clinical protocol

“It’s not a drug that I’m putting in my system and its not something that I’m smoking.  So, if you’re telling me that you can put something in my ear and make me better, sign me up every day of the week!”  


- Andy, from Evren's PTSD Pilot Study 

Better Stimulation Delivers High Quality Data



You will find a perfect fit for your study participants with Evren's proprietary, conductive earpieces.  Made of soft silicone; will be available in 3 sizes    (S, M, L)


Use your own!

Soft Comfy Earpieces

Why Research VNS?

The vagus is the key component of the parasympathetic branch of the autonomic nervous system, and because the sympathetic and parasympathetic nervous systems act reciprocally -- when one goes up, the other goes down -- the vagus nerve is critical in many therapeutic areas due to its beneficial effect in restoring balance in cases where sympathetic activity is abnormally raised or parasympathetic activity is lowered.   


Researchers are investigating:  VNS mechanisms of action, restoration of autonomic balance, laying new neural pathways during tasks, reduction of symptoms and systemic imflammatory responses and much more...

 taVNS Research Areas Include:

  • COVID/post-COVID

  • Anxiety and depression

  • Sleep Disruption

  • PTSD

  • Tinnitus

  • Epilepsy

  • Diabetes

  • Respiratory Distress

  • Enhanced cognition and learning

  • Traumatic Brain Injury

  • Addiction

  • Pain

  • Rheumatoid Arthritis

  • Weight Loss

Contact us to


the Phoenix CR-100


Will include device, earpiece (specify S, M or L), conductive gel, charging cord, software USB and case


*Estimated availability May 2023,

Product for Research Use Only

Ask us - discounts may apply!

  or Earpieces  

          Available individually ($199)          or in packs of 10 ($1,790)

Pre-Order Here

Select your product:


Thanks for pre-ordering the CR-100!

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