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My First Ocharaku Experience

First of all, I must confess that I'm a complete beginner in this field. A department manager offered me to try this to get a feedback from a "near-real" consumer perspective. And I just cannot pretend to be a skilled and experienced reviewer.

Hence all I can do to make this article is as authentic as it can by repeatedly using the product and reiterate to the best I can of my true experience. . . that's why this is more of an impression than an organized review. *If you want to read great reviews on Ocharaku products, visit a brief list I compiled: Ocharaku Reviews from Audiophiles All Over The World

Okay, confession is done. Let's get on to my experience with Ocharaku.

For over 3 months, I have been listening to music using the Ocharaku headphones "Flat4-SUI Plus" during the commuting train rides (2 hours per day average). My musical preference covers various music genres, ranging from J-Pop to classical. And I've also used it to listen to podcasts and drama series.

The Devices I have been using during this endeavor are: iPhone & Huawei P9 (on the train), Desktop PC (in my room). Audio files are sourced from: CD and Apple Music.
*I must confess again that I didn't use any high-grade audio device. Please make suggestions if you would like the product to be tested on other devices.

Flat4-SUI Plus [Plug] 3.5mm Stereo Mini Plug

*Although the "Flat4-SUI Plus" is an entry level product from Ocharaku's flagship lineup - the "Flat4 series", signature technologies are applied to it just like its high-class counterparts released in the series.

I found that I am thoroughly enjoying the sounds produced by the Flat4-SUI Plus, it highlighted some details I've never been able to hear before, dramatically bringing out the hidden qualities of the original acoustic.

I would normally adjust the equalizer if I want to focus on the particular sound range, it always ends up masking the other ranges, moreover, the disturbed balance is also more than likely to produce a bland noisy sound.

However, the sound Flat4-SUI Plus produces is always balanced and pleasing at first glance (or hearing).

"SUI" faithfully replicates different tones from all frequencies in a natural way thanks to the technology developed by Ocharaku named "Twin Equalized Element System."

I was a bit skeptical in the beginning because it was the first time I came in contact with this technology and knew nothing about it and how it works. But after 3 months of use, it finally made sense to me.

Among all the different tones processed by "SUI," I especially enjoyed the low range. You can be easily identified when listening to dance music like the ones listed below.

Recommended Audio Sources for Reference

*If possible, please listen to these songs NOT on YouTube but CD or streaming service for better reference.

Sly & The Family Stone - If You Want Me To Stay

Great bass.

Adele - Hello

Great mid and high (especially vocal!)

w-inds. - We Don't Need To Talk Anymore

Fine drum & bass.


Flat4-SUI Plus [Plug] 3.5mm Stereo Mini Plug

Before end this article, I will list appearances of "Flat4-SUI Plus." Hope these will help your further understanding.

Ocharaku SUI Unboxing

Flat4-SUI Plus [Plug] 3.5mm Stereo Mini Plug


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