Thinksound Rain2 IEMs: A Natural Sound in a Natural Package

When I first discovered Thinksound, it was on my quest to find a good, full sounding replacement for my Macaw GT100s. However, given the high quality sound that I was already used to, I couldn’t get just any pair of IEMs. After doing some investigating, I found that not only does the Rain2 provide the level of sound quality I need, it also does so in a eco-friendly way. For $99 dollars, these were a steal. You can also often find them on sale on Amazon for $89.

Thinksound makes all of its headphones out of wood. This serves two purposes: one, to take advantage of the natural sounds that wooden earphones can make, and two: so that its earphones are recyclable. That’s pretty cool.

As an added bonus, you can send in your old pair of Thinksound earphones for recycling, and get 25% off your next purchase. That’s some pretty hefty savings, especially if you are looking to get a flagship pair of earphones.

Disclaimer: This review is based upon a sample unit provided to me by a manufacturer in exchange for my honest opinion and un-edited words. I do not profit in any way from the writing of the review.

Sound Signature

Highs are decent. They mesh well with the rest of the sound, without getting lost or muddied which is partly what makes the Rain2 have such a smooth sound. However, compared to titanium-driver IEMs, the highs a pretty recessed. When using a regular DAC, such as that inside a Nexus 6P or laptop, there is a pretty noticeable sibilance (harsh “s” sound in vocals). Equalization can somewhat fix this, but the problem persists regardless of the device I used. Only when using a proper DAC/amp combo could I fully remedy the issue.

Mids are good as well. Full sounding, and accurate. They have a very warm feeling to them and are balanced well with the rest of the sound, as they have a rather flat signature to them.

Lows are tight and controlled, while being defined and present, which is surprising for IEMs with an 8mm driver. Even in songs with active and complex lows, such as Recognizer by Daft Punk, they never became overblown.

Bass is just right. There is no extra sound, or sloppy reproduction. The bass lends depth and impact to songs that is hard to come by. Rock and Electric music is accentuated nicely by the sound signature of the Rain2.

Sound Isolation is good. Thinksound did a good job with the Rain2, as they are capable of blocking the noise of a hairdryer, loud children, and the screams of my enemies pretty nicely. No matter how good of a seal I got though, people talking loudly next to me tended to penetrate into the music I was listening to. Raising the volume fixed this.

Sound Staging is about as good as I could ask for from 8mm drivers. There is definitely a wideness to it, with defined directions that instruments can take on. A good example of this would be Outlands, by Daft Punk. There is also a decent amount of depth, with instruments also being able to take on a distance, as well as a position. I will update this section to reflect how well the Rain2 does on an airplane at a later date.

Sound Type: Warm


Comfort is superb with the Rain2. The included earbuds fit just right, and created a seal that didn't feel like a suction cup on the inside of my ear. The light construction of these IEMs also made them hold up well in extended listening sessions, as well as while walking or jogging. Unfortunately, it’s going to be pretty difficult to sleep or lay on your side while wearing the Rain2, as they will press inwards very hard.


The Rain2 is pretty portable. It is slick, and doesn’t have any weird extrusions. The relatively small size of the driver housing makes it easy to slip into my pocket, even when wearing tighter pants. There also an included carrying pouch made out of recycled materials.


While I can’t speak for long term durability, as I’ve had these earbuds for about a week at this point, I can say that they appear to be pretty sturdy. Drops won’t pose an issue, simply because of how light the Rain2 is. It won’t gain much momentum on the way down, and the wooden casing is very hard, and won’t scratch easily. Thinksound put a lot of time and attention into the cable connections. They are all covered with an extra layer of stress-relieving plastic. The 3.5mm jack is very well constructed. This is the best stress-relieving job I’ve seen on a pair of earphones to date. If anything, it will be the last part of the cable to break.

Thinksound also claims that the Rain2 is “sweat resistant”. No specification is mentioned, but the casing and cables are rather easy to clean.


There is no mic on the Rain2. If you are someone who really uses it, you may wish to consider a different pair of IEMs.


The Rain2 comes with a carrying pouch made from recycled materials, a shirt clip, and some extra earbuds. The carrying pouch feels solid, and the earbuds are decent.


If you are looking for a good pair of earphones with a nice soundstage, detailed and a warm sound signature, that happens to be eco-friendly, and is under $100, then these are for you. However, if you want earth-shattering bass, or are a heavy user of inline-controls, then you may wish to look elsewhere.

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