The Ecotones Duet Adaptive Sound Therapy System, also referred to as SOUND+SLEEP sleep therapy system, is a sound machine with adaptive sound technology built into it. The adaptive technology actually counteracts noise fluctuations in your environments by automatically, yet subtly, increasing its own volume. The results are quite amazing, and users comment that they can sleep through train whistles, noisy neighbors and more. The SOUND+SLEEP’s exterior is also quite pleasing to the eye. A glossy black control panel and a large speaker provide a modern, yet appealing façade.

Features
Compare
7.5/10
Sharper Image
HoMedics
Sound Oasis
Adaptive Sound Technologies
Brookstone
Sound Oasis
Marsona
Conair
Marpac
8.8
10
8.8
7.5
6.3
6.9
5
3.8
3.8

Even the deepest sleeper can be affected by bright lights, making a sound machine with an intense display less effective. The SOUND+SLEEP white noise generator has a convenient feature that allows the display lights to be turned on and off. A sleep timer with settings of 30, 60, 90 or 120 minutes acts as an auto shut-off feature. Set the timer, and after that allotted amount of time, the white noise machine will shut down automatically – or you can choose to have the white noise machine run through the night.

For those who deal with constant environmental distractions when trying to sleep, the SOUND+SLEEP sleep therapy system has one of the most advanced features we’ve seen in the sound machine market. Each SOUND+SLEEP’s unit is installed with adaptive sound technology which reacts to sounds in your surroundings. If the white noise generator senses noises rising above its attempt at therapy, the noise machine slowly increases its volume to override the extraneous din without bothering the user. The technology is quite effective; users say that while they may hear the increase in volume, it is so subtle, it doesn’t bother them.

Ease of Use
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8.8/10
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HoMedics
Sound Oasis
Adaptive Sound Technologies
Brookstone
Sound Oasis
Marsona
Conair
Marpac
9.4
9.4
10
8.8
9.4
9.4
7.5
2.5
5

For a sound machine to be truly user-friendly, it must be user-tested in several different environments with different kinds of people. The makers of SOUND+SLEEP understand this need and actually spent months testing it in different places, including the Stanford University Medical Center. Now Stanford is making the SOUND+SLEEP available to all of their patients during a hospital stay for a better night’s rest. SOUND+SLEEP’s design makes it extremely portable, and it has the ability to be battery powered or plugged into the wall for use.

Sound Selection
Compare
8.8/10
Sharper Image
HoMedics
Sound Oasis
Adaptive Sound Technologies
Brookstone
Sound Oasis
Marsona
Conair
Marpac
10
7.5
8.1
8.8
9.4
8.1
8.8
9.4
2.5

If you’ve ever shied away from purchasing a sound machine due to horror stories about looped sound, the SOUND+SLEEP is for you. The richness setting, a button on the bottom right hand side of the sound machine, randomly mixes in hundreds of variations that enrich the sound you hear. Because of the algorithmically placed enhancements, the recordings aren’t on a loop and can vary for hours. For example, the ocean sound setting can be enhanced by the sound of seagulls playfully calling or a more intense wave. Each sound selection can be customized to your preference.

Adaptive Sound Technologies Summary:
8.3/10

The SOUND+SLEEP sleep therapy system sound machine has so many things going for it. Because it is specifically designed for sound therapy, it doesn't offer all the bells and whistles (like a built-in alarm clock), but its solid identity as a sleep aid makes the sound therapy features shine. Equipped with adaptive sound technology, this sound machine can mask any extraneous noise, resulting in a longer and more effective REM cycle. For a better night’s rest, the SOUND+SLEEP is your figurative sand man.

 
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Adaptive Sound Technologies SOUND+SLEEP

Pros
Adaptive sound technology prevents any sound spikes from disrupting your sleep.

Cons
An alarm clock is not built-in.

The Verdict
: 8.25/10

This is the best sound machine specifically designed for sleep therapy.