















🧠 Elevate your mind with the science of sound—because your brain deserves clarity.
Clarity by Gamma is a compact, rechargeable sound player emitting precisely tuned 40Hz gamma frequency tones designed to support memory, focus, and brain health. With easy one-button operation and included high-quality earbuds, it offers a non-invasive, science-backed brain stimulation therapy ideal for daily use without the need for apps or Wi-Fi.







| ASIN | B08SJCHS5C |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Best Sellers Rank | #25,877 in Electronics ( See Top 100 in Electronics ) #381 in Home Theater Audio |
| Date First Available | January 8, 2021 |
| Item Weight | 3.2 ounces |
| Item model number | 860001601831 |
| Manufacturer | Gamma Light Therapy LLC |
| Package Dimensions | 3.15 x 3.15 x 1.65 inches |
M**N
Very convenient--and exactly as advertised
Sleek, compact and easy-to-use digital playback device. Comes with pocket-size hardshell carrying case. Hit the play button and you'll hear a brief voice announcement followed by one hour of the tone. Then it stops. There are also buttons for "back to the beginning" and "jump to the end". Holding the play button down shuts off the unit. 40Hz buzz tone sounds the same a the one posted on Youtube as "Exact 40 Hz Gamma Brainwave audio used by MIT" study. Recharging off a laptop USB port (cable included) is easy and just takes a few minutes to charge. Charging cable plugs into the earphone jack on the unit, keeping it small and simple. Ear buds are good quality, but don't come with alternate size ear pieces, and may be too large for some people. Note that, contrary to the instructions, ear buds are interchangeable--there is no Left ear or Right ear shape. All in all, a very nice design, well-made.
H**O
Clarity - 40Hz Sound Player by Gamma - Memory Sound Therapy - Memory & Brain Improvement
This is a piece of junk. Please don't buy this item. It will not charge up or play. I was trying anything to help my brain but I wasted My money on this. I was stupid to think Gamma could help my memory. I use to buy from Walmart but they said I sent to many things back but I trusted them. Now I use Amazon and I love them, I trust them as much and now I am afraid to send anything back. So........I have ended up with a bunch of junk.
L**K
They just don't last
I've purchased many of these over the years. A radio article about 40Hz research sold me to the idea that we can improve our brain's ability to clean itself. This sound has been shown to do just that. However, the quality is poor. I've never had one last for more than a few months. Some stop working almost immediately. Great product. Poor quality.
R**R
Still testing. So far so good.
Head set didn't work. I returned it .replacement works so far
S**H
I Can Remember My Dreams Again
My dream life has always been really important to me, but lately I have been unable to remember them. I almost could but as soon as I opened my eyes, all trace recollections of the dream would vanish. Since I started using this device, I have been recalling dreams just like I used to. I'm back to having a rich and vivid dream life. When the session is over, I hear an odd sustained harmonic tone for awhile which eventually subsides. It makes me wonder if my neurons are also continuing to oscillate. The only thing I really hate about this device is the loud voice that comes on at the end just to say that the session has ended. It startles me so badly that it hurts. I'm sticking with it, though. I am loving having my dreams back. I think I'll buy one for my Mom.
P**C
My Family Has Had Few People With Signs of Alzheimer...Buy Why Take Chances?
Over the past two years, I've been watching TedTalks and keeping up on the ongoing research. I read the book. "The End of Alzheimer's" by Doctor Dale E. Bredesen, MD. While I think my odds of getting it are pretty slim, I wanted to do everything possible to reduce the probabilities. One of the more promising protocols comes from Gamma Clarity 4hz Light Build. Their devices are inexpensive, and they are pretty much based on early research. But one downer is that while the initial conclusions seemed hopeful, there has been a lull in activity to get the research going. I hope they get their act together.
J**O
Not working
The device stopped working after 1 month. It won’t charge and won’t stay on. This isn’t worth it. Can I still get my money back?
J**Y
Died in 2 weeks
I used this Gamma Clarity 40Hz Audio device one hour a day from April 20 to May 3, 2023. Charged it between uses as the instructions said to do. I handled it very gently. Today it was dead as a doornail. Won't turn on, won't charge. I even tried different chargers and different outlets. It was very nice while it lasted. The earbuds were too large so I used a set of Skull Candy earbuds that fit me better. It's still dead with the original earbuds. The instructions require a magnifying glass to read. There are other reviews complaining about short life so if you decide to get it, hold on to the packaging because you might need to return it.
G**L
Colis arrivé ouvert. plus de casque. retourné au fournisseur. dommage. déçue. Etiquette sur le colis mentionnant qu'une batterie est à l'intérieur : ça attire les voleurs.
M**A
Great item! Is too early for me to express an opinion on their performance to the BRAIN, 🧠 but I believe it will be a help and I will comment after a month about its performance I CHANGE ALL MY OPINION- THE ARTICLE WAS TO BE A GREAT PRODUCT WITH CURATIVE PERFORMANCE, IT ENDED ISTEAD TO BE A DIFECTED ARTICLE, EVEN THE LIGHT WAS RETURNED BUT NEVER EXCHANGED- I ASKED FOR ASSISTANCE, WITHOUT SUCCESS, THE ARTICLE WAS NOT CHARGING FROM THE START, AND I HOPED COULD HAVE BEEN REPLACED OR CORRECTED- WRONG MARKETING, WRONG PRODUCT- NO ASSISTANCE -
Trustpilot
1 week ago
2 weeks ago