That is a general assumption people make but there isn’t really much science to back it up. What we do know though is that isochronic tones are ineffective below 4hz, and possibly a bit higher. So for theta and delta entrainment you are best off with binaural beats. In my experience binaural beats will be very effective all the way up to around 40hz.
I want you to know that I only post reviews and recommendations for products that have been personally tested by myself.  I have been in this game for more than seven years, and know that there are a lot of products out there in varying degrees of quality.  I have set up this page with the goal of saving you both time and money in exploring this realm, so you can get straight into the game of bringing yourself to that next level in your own personal development.

Deep relaxation is a major benefit resulting from the brain’s cortical frequency following response. By selecting the desired rate the brain, via the frequency following response, will tend to mimic the rate it is exposed to and thus enter that brainwave state. This helps to explain why this technology can produce benefits commonly found with meditation. One of the most valuable benefits of consistent  brainwave entrainment is that we are able to experience and recognize the various states of consciousness. With practice we can learn how to re-create these states.

By the end of just a few short days (3 or 4 of use), my constant “on edge” feeling completely dissipated. I had changed my lifestyle drastically to a very low-stress environment. All feelings of anxiety disappeared rapidly, but I was still experiencing something “physical.” I had trouble explaining it to anyone. I lashed out immediately at the slightest frustration. I tried to explain to those around me that it was something physically happening in my brain, but they were skeptical. Within less than a week of using the EOC cd’s, I noticed my tolerance level for dealing with people and situations had increased tremendously.
To further illustrate how brainwave entrainment enhances your meditation practice, here is an explanation. When an experienced and advanced meditator is hooked into equipment that reads their brainwave patterns, it is most common for their brain to move from whatever state they are in before they meditate (normally a Beta or higher Alpha state) slowly down into a deep Theta rhythm.  Very advanced meditators are able to bring their brain all the way into a Delta state, which is most normally where deep sleep occurs.  To be able to bring the brain into these deep brainwave states through the process of meditation can take years of meditative practice, and lots of discipline.

Heart rate variability: A new study suggests that among those with low HRV (heart-rate variability), brainwave entrainment can increase HRV. Researchers studied individuals ages 20 to 70 and administered alpha brain stimulation. The alpha wave stimulation resulted in greater heart-rate variability. Since a low HRV is associated with early mortality and poor psychological and physical health, efforts made to increase it should be regarded as beneficial.


A crossover RCT of a single session of theta stimulation in four healthy adults reported no significant improvement in verbal fluency or attention associated with the intervention and a reduction in immediate recall. Controlled comparisons reported significant benefit from the intervention in all three outcomes measured. Six pre/post studies reported significant benefit from the intervention for 19 of 28 cognitive outcomes.
Transparent Corp's Research Area is arguably the most comprehensive resource for collated brainwave entrainment research.   Update: the main research area on Transparent Corp's website is currently being updated, so it is offline.  However, you can still access their peer-reviewed research paper as a PDF here: “A Comprehensive Review of the Psychological Effects of Brainwave Entrainment“.

Some people are more sensitive to the audios than others – if you are one of them, be sure to take a break from what you are listening to and come back to it later. Always follow your body’s signals, and don’t hesitate to ask questions. You can always drop me a line for some honest advice on anything related to brainwave entrainment, meditation, holistic health, etc. You can also rest assured that all brainwave entrainment products listed here are of the highest quality – most of them I have used for years. I also highly recommend reading What Is The Best Brainwave Entrainment Product, too.  Don’t feel shy to bother the creators of the products themselves, and their support teams – you are in your full right to do so!
I’ll give you another relevant analogy.  When you are bodybuilding, working hard to build strength and build your muscles, you can push yourself to the point that we know is healthy.  But what happens if you try to max out with the same exercise past the point that we know your body can handle?  You’re going to get hurt, and you’re not going to get buff any faster.  You can’t just push yourself to the limit with the barbell as many times as you want in a day/week.
The two drawbacks: time and money. It takes a full hour everyday for months, and you can drop quite a bit of cash on it (each level costs around $200 for the digital download version and more for the actual CDs). A level takes a minimum of 6 months to complete, so you have to remain dedicated to see the results. Quite an investment, so you'd need to be in it for the long haul. Great support and service, though.

Isochronic tones and Monaural beats are now being considered by many to be more effective and more useful in brainwave entrainment technology. Monaural beats, unlike binaural beats, only use one beat. It is said that these are easier on the brain, and help to induce a specific brainwave state faster and more effectively, as the brain does not need to go through the process of reconciling two different frequencies. 


Brainwave Mind Voyages 30 CD Set: Brainwave Meditation Programs, Hemispheric Synchronization, and Brainwave Entrainment Technology (30 BMV CDs: Lucid Dreaming, Astral Trance, Alpha Brainwaves, Theta Brainwaves, Delta Brainwaves, Tones, Astral Vibrations, Remote Viewing, Beta Brainwaves, Lucid Dream Cycle, Lucid Dreams Hypnosis, Guided Dream Incubation, The Whales CD, Rainstorm, The Waters CD, Nature Sounds, Heartbeat Meditation CD, The Om Meditation, Ganzfeld Effect/ White Noise, Breathing Silent Mindfulness, Breathwork Yoga, Tibetan Singing Bowls, Schumann Resonance, Sacred Healing Frequencies Solfeggio Healing Tones, Sacred Geometry, Celestial Sounds, Audio Mind Machine Sessions, Awakened Mind Brainwave Pattern, Float Tank Hypnosis Session, Full Body Mind Massage Hypnosis)

Hi Sahil, it’s hard for me to speak about other people’s tracks and videos, as I don’t know how they created them either. If you’re interested in a particular track/video and unsure about it, try asking the creator a question or two about the track, what frequencies were used and for how long, what software they used etc. Then make your own judgement based on how they reply to you. Jason
Many psychologists, doctors, teachers, and other professionals have endorsed the technology while personally taking advantage of the limitless benefits that accompany EquiSync's precisely designed brainwave synchronization/ entrainment technology. It is such a profound field of study that many of the metaphysical benefits, those beyond our current scientific measure and technological & philosophical understanding, have yet to be discovered.
Sleep improvement: There is significant anecdotal evidence that sleep induction and/or quality may be improved as a result of brainwave entrainment. While it is important to consider the placebo effect or simply the effect of a relaxing sound, many people have reported noticeable improvements in their ability to fall asleep and wake up feeling refreshed as a result of entrainment. Entraining frequencies within the slower wave ranges such as alpha, theta, or delta, may help individuals transition more quickly to those states.
it says the following: “Running a delta sleep session throughout the night is not recommended as it can interrupt the normal sleep cycle”. I’ve been looping pure delta isochronic tones for about 5 days now, and have had quality sleep. Should I continue looping delta or should I let the videos play out without looping them? Will it will harm my health to do loop delta while I sleep?

Unleash your mental power with advanced brainwave entrainment technologies from mindmachines.com.  Relaxation, meditation, sleep, accelerated learning, peak sports performance,  motivation, stress relief, behavior modification, freedom from anxiety and more are possible with the push of a button with this powerful mind entrainment technology.  By altering brainwave your brainwave frequencies using frequency controlled patterns of light and sound these and many more brainwave states can be achieved in just minutes.  Why spend years learning to meditate when you can do in instantly with this a mind machine.
Filed Under: Flow State, Healing, iAwake Weekly Call, Life Optimization, Practice of Meditation, Profound Meditation Program, Recovery from addiction, Science of Meditation, Waking Up Tagged With: Benefits of Brainwave Entrainment Meditation, Changing Our Brains, Conscious Evolution, Daily Meditation Practice, Emotional Healing, Integral Practice, Life Optimization, Meditation Technology, practice of meditation, Profound Meditation Program, Profound Releasing, Releasing Trauma, Science of Meditation, Spiritual Development, spiritual maturity, spiritual practice, Stealing Flow, Waking Up, Workout Ecstasy
In all professionally produced meditation programs, you train your brain gradually. That is how you successfully develop. Just like training the body, you progress gradually. This is the key. In BrainAscend you start with level 1. Each track is 30 minutes.  Use it once per day for 30 or 60 minutes at a time (once or twice in a row. Use repeat/loop function in your player) or twice per day for 30 minutes at a time. You should use every level for at least 2-3 months before moving to the next. The exception is level 1 which is an introductory level which you can use for a week or so. After that time, if you can repeatedly remain fully aware on your current level without falling asleep (even if playing it twice in a row) you can move on to the next level. Until then you should continue on your current level. Listen with closed eyes, either sitting up or laying down.
Theta waves have a frequency between 4 and 7.5 hertz, making them slower than more wakeful alpha but faster than the dreamless slumber of delta. Theta brainwaves are the frequencies of nighttime dreams and REM sleep when the brain goes through bursts of activity and eye movement. People also experience theta waves in a state of light sleep, deep relaxation, during meditation and prayer, and when daydreaming. Theta waves produce an experience of inward wakefulness where we become disengaged from the outside world while engaging in inner activity. At the lower frequencies of theta, sleeping states are experienced, and at the higher range of frequency, awake relaxed states are experienced. 

Give thanks. I am currently on a journey of discovery in regard to brainwave entrainment. I have shared this information with individuals with ADD as well as other chronic and serious physical ailments. I plan to continue to share with those I know who are suffering depression. I am totally amazed, almost stunned at how well this works. I do believe in the creator. I am humbly giving thanks. Incrediable. Much love and light to all especiallly to Andy for sharing this elegant modality.
One RCT (n=108) showed significant reduction in anxiety from a single session of alpha/delta therapy for day surgery patients. A crossover RCT of a single session of theta stimulation in four healthy adults reported significant improvement from the intervention in one of five measures. Five pre/post studies reported significant benefit from the intervention for 16 of 27 outcomes.
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