I have been in the hobby for a few years now and own a lot of different IEMs, earbuds, and headphones. For the last year or so I started to grow tired of my analytical sounding gear. I've realized that I first and foremost want to have a "fun" experience when listening to music. I had already started shifting gear towards that goal when my Mega5P accidentally got stepped on. When I got in touch with Hisenior they mentioned new sets were on their way, so I thought I'd take a chance and blind buy one of them instead as a replacement. All I can say is wow, the Okavango delivers precisely what I am looking for, a genuinely fun and clear sound with a great sense of musical presence. If you want a musical set, then this is definitely endgame material.

Aesthetically one of the most beautiful IEMs ever seen.
In addition to aesthetics, their sound is very musical, listening to them is pure musical enjoyment.
It is not an IEM for those looking for extreme technicalities, but for those who want to have satisfying listening. I strongly recommend them.

https://www.head-fi.org/threads/the-discovery-thread.586909/post-17708177

聴いた瞬間、まさにこれ！
私の探していた鳴り方のイヤホン！と感動しました。

　T4とOKAVANGO、同時にリリースされましたが、OKAVANGOから先に購入しました。
OKAVANGOは、迫力と濃密な音が印象的で、鳴らすほど音像がはっきりしてくる印象を受けていますが、T4は聞き初めから楽器の音の見通しがよく、音の広がりを感じます。

　ボーカルも楽器の音にうもれず、はっきりとリアルに聴こえています。

　思わず聴き入ってしまうイヤホンです。

　The moment I heard it, this was it!
Earphones with the sound I was looking for! I was impressed.

T4 and OKAVANGO were released at the same time, but I bought them from OKAVANGO first.
The OKAVANGO is impressive for its powerful and dense sound, and I get the impression that the sound image becomes clearer the more you play it, but with the T4, you can clearly see the sound of the instrument from the beginning and feel the spaciousness of the sound.

The vocals also sound clear and realistic without being overshadowed by the sounds of the instruments.

These are earphones that you can't help but listen to.
　

Hisenior Okavango is just pure fun, it delivers a joyful experience where your feet will start tapping to your music. Not the most resolving set out there, but this was never what they tried to make here. Bass is lush and organic, mids are full and forward and treble is detailed and not tiresome.
The Okavango is for me a set where you can put on everything, good for just sitting down and enjoying music. Not for picking apart music, but for enjoyment sake.

I would rate it a solid 5star for the money.

Enjoy your music guys and gals.

https://www.head-fi.org/showcase/hisenior-okavango.26620/review/31695/

Fisrt of all I'd like to thank Hisenior and Gareth for their kindness and easy communication. Everything was very easy from  pre-order to delivery (I'm living in France).

I'd like to precise I'm not a reviewer just a passionate who share feelings and pictures of its own collection. 

When I received my new toy, I totally fell in love with it's look and quality. Better in real than in picture. 

I can only speak about what I have ordered, I mean Okavango and WhitWhale cable, no stock cable in my order. WhitWhale cable looks really good, really light and well finished.

It was not as easy as with others of my iems to find the right tips. And finally, the game changer is Tangzu Sancai. Now, perfect fit and confort.

I meanly listen to Blues, Rock, Bluegrass, Country.

First impressions with standard settings ( soundstage +) are good, I like what I hear but I need more tests and of course more time to make my final opinion.

I quickly change to balanced settings which seem to be the favorite settings among reviewers. And I need to say I prefered this option too. Nevertheless, after several changes, vocal+ is the winner for now . It can of course still change.

What I hear is fun, with organic bass. I don't know if this is very understandable but this is what I feel. And I think in some kind of way I can compare the bass to my Kennerton Vali headphone. The fun fact. Yes, bass is fun with this iems. Very different of my Thiedaudio Legacy 4, bass is thin on Legacy 4. And this is good because I really wanted a different sound.

I won't say they're basshead iems but like Erling Kildal said in a previous review and I totally agree with him, they're fun and energetic for sure.

I'm very sensitiv to highs and have to say it works better for me with my R6 Pro II and my RU7 than with my R6 2020. With saber dac it becomes a little bit harsher.

IMO, soudnstage is not the best I ever heard but good anyway.

To conclude my feelings, I have to say I'm very happy with my choice. Okavango are what I was expecting : FUN, beautiful and qualitative !!!

The Okavango comes in a nice box with good English technical description. Inside is their «bulletproof» Pelican style hard carrying case and plenty of accessories. The IEM’s themselves is a beautiful pale green color with the Okavango delta faceplate in sparkly green resin and sand color stabilized wood. Really a pretty IEM, and you can also customize this for a fee. Cable is OK, all in all a good stock cable. I also got the White Wale cable from Hisenior. I like this more than their stock. Beautiful silvery white color with grey hardware. I am not capable of hearing differences in cables, so for me this is an aesthetics, feel, quality and comfort thing. I would say this cable is well wort its price.

The sound of the Okavango is energetic and fun. It has tuning switches tailoring for personal taste. I like it best with both switches off. Deep defined lows, beautiful minds and plenty highs for my ears. If you want comparisons you will find this from many of the more seasoned reviewers than me, and still more of this to come! Personally I find this a pleasant set for all my music, which spans all different generes except classical. I would say you have to either have a preference for really neutral sound, or other more extreme sound signatures if you can not find this set good and satisfying.

The Okavango has excellent fit for me. No complaints. I see som people complain about some small driver flex, but this is not something I have encountered, even with excellent seal in ear canal.

With The White Whale cable it is a hard to beat combo for US$ 369! Sound and looks is a very personal thing, but for music lovers in general I will wholeheartedly recommend this this set, specially bundled with the White Wale cable. I can not imagine you will be disappointed!

love the color and design
pairs perfectly with seeaudio rinko

Despite the variety of drivers, Mega5 EST is a very balanced sound. I think the crossover of each drivers is properly designed.
It is very light weight and comfortable feeling to wear.
The sensitivity is a little bit low and the volume has to be turned up, but a normal music player can cover it.

Mega5 ESTは多種・多ドライバーであるにもかかわらず、クロスオーバーがしっかり作りこまれており、非常にバランスの取れたイヤホンです。
イヤホン本体は非常に軽く(安価なシングルドライバーイヤホンと同等）、着け心地も素晴らしいです。
少しだけ感度は低く、プレーヤーのボリュームが上げ気味になりますが、通常のプレーヤーで十分再生可能です。

MEGA5EST is a very attractive IEM with a wide sound field, sound separation, delicate high range, and deep sinking low range.
This IEM uses three types of drivers, but the sound connection is very natural.
It is suitable for long-term listening because there is no high-pitched sound.
The WhiteWhale cable, which is only included in the 7th Anniversary Limited Edition, is very light and easy to handle.
Thank you very much for the great earphones!

私はMega5pとMega5p Ultraを所有しております。

Mega5pを聞いたときは、自然で温かみのあるバランスの良い音がすると感じました。
全体的に解像度が良く 、高音は刺さらずきれいに出ているし、中音は適度に厚みがあり男性女性問わずボーカルが艶やかに聞こえる。低音は深いところまで出ているが、少し薄く感じました。

Mega5p Ultraは低音の量感が増してより自然な音になりました。高音もより明瞭に聞こえるのにあくまで聞き疲れしない音のなのは素晴らしいです。

新しい純正ケーブルは取り回しがよくなり、プラグ交換式になったため利便性が向上しました。また、前の純正ケーブルと比べて２ピンの電極が細くなりました。そのせいか、筐体側の穴も小さいです。日本で手に入れやすいケーブルは電極が細いタイプも多いので個人的には嬉しいです。

I really like the Mega 5P EST.
It has an overall warm presentation with strong Sub Bass presence, slightly elevated and forward mids, and very good clarity and extension in the treble region.

Introduction:
My Hisenior T4 Custom IEM is inspired by ITZY Ryujin's IEM design.

Design and Build Quality:
The build quality is exceptional, delivering a sturdy and reliable feel.

Sound Quality:
The sound quality is remarkably close to my monitor speakers, ensuring an excellent audio experience.

Noise Isolation:
The noise isolation is impressive, as it effectively blocks out external sounds, allowing me to focus on my guitar and band monitoring.

Comfort and Fit:
Wearing these custom IEMs is incredibly comfortable; they feel almost weightless.

Customization:
I opted for a green color and had our band logo and Hisenior logo incorporated into the design.

Price and Value:
The Hisenior T4 Custom IEM offers excellent value for its price point.

Conclusion:
In conclusion, the Hisenior T4 Custom IEM is an impressive choice for musicians and audiophiles. Its outstanding sound quality, noise isolation, and comfortable fit make it a worthwhile investment. The customization options allow for a personal touch, and it represents great value for its price. Highly recommended!

The T4 is a pleasure to listen to, that is if what you are after is a balanced and eminently musical sonic experience. The tuning switch implementation is spot on and provides a measure of useful flexibility without sacrificing the outstanding clarity and detail.
What the T4 provides in abundance is a very musical and organic sound which is perfect for long listening sessions. It is one of the few that allow the listener to enjoy listening to music on the T4, without hearing the T4. High praise indeed.

The Okavango still has the soul of Highsenior house tuning with amazing vocals and a fun organic sounding bottom end. What really shines with the Okavango is how Hisenior incorporated some extra energy into the top end giving a different flavor to the current collections. The Tuning switches work well and are well implemented giving you a few different preferences to your desired sound preferences. In comparison to the Mega5p it's a clear upgrade path for a slightly less warm offering. In comparison to the market where there is the Sound Rhyme SR7 and OG Yanyin Canon for more money - I would take the Okavango over both and take away the best of both.

First impressions, not burned, but im really impressed with this iem

This could compare to more pricey options like MANGIRD TOP.

✅ Suitable for low volume
✅ Bass is delicious, treble is on point
✅ TOTL build quality
✅ Switches are really useful
✅ Deep scene with a nice sense of weight…

🟡 …although its on intimate side
🟡 Packaging is beautiful, but complements are not at same level

⭕ With some tips, driver flex could be an issue