Review of the Hisenior Okavango IEMs. 1x9.5mm Bio-cellular DD + 6BA's and a 4 way crossover. I bought this with my own money and my opinions are my own.
I've had this set for a month now and burned them in. I used a FiiO M17 with local FLAC files and local Qobus high resolution files. The tuning switches were set to off and there was no EQ used. I always use Dunu Candy Large tips, as they seal perfectly in both ears across many platforms.
There have been very few reviews on this set or this company for that matter. They specialize in custom IEM's for musicians, but also make what they call Universal sets. I bought the set to compare against the Performer 8 and SA6 MKII. The price point was $300 for the IEM's and another $70 to upgrade to the White Whale cable.
I wouldn't be reviewing this set if I didn't truly enjoy listening to them and think they're great value for money.
Sound Quality:
Sub bass - they can rattle your teeth. I listened to VVS and the low frequency rumble could be felt.
Bass - has excellent slam. I'm a lover of Drums, as you can see from my library and this set delivers. Bass and kick drums did not disappoint. Beastie Boys, Curtis Mayfield, Funkedelic all sounded great
Mids - Male vocals are slightly recessed, but very clear. Some sibilance on a few tracks, but I put that down to the recording.
Upper Mids - Female vocals were more forward, balanced better. No sibilance detected
Timbre was excellent, as well as note weight. Rapid pops, clicks, rim shots etc. where very much like you were there, but not in your face.
I'd call this set balanced to slightly dark. Not fatiguing at all. I'm able to listen for hours with no problem
Treble and Upper Treble - are very detailed, but again not fatiguing
Sound Stage - is average, but when both tuning switches are turned on this expands greatly and the sound quality doesn't suffer for it
The fit is very good. The look great in the standard green and timber finish, but there are many custom shells available. Similar to the selections available on the MMKIII.
I rated this set better than the SA6MK2 and slightly better than the Performer8. My MMKIII is noticeably better and more immersive, but this set is not slouch and should be considered for libraries like mine below.
The Library Used:
Journey Faithfully
Curtis Mayfield Pusherman
David Bowie Wild is the Wind
Foreigner Double Vision
Rush Xanadu
The Who I AM The Sea
The Who Overture
Tool The Pot
Tool Chocolate Chip Trip
ZZ Top La Grange
Bob Marley Turn Your Lights Down Low
Sisters of Mercy Something Fast
Kamaiyah VVS
ELO Mr. Blue Sky
Funkadelic Back in our Minds
Ohio Players Fire
Fergie London Bridge
Adam & the Ants Antmusic
Peter Gabriel Shock the Monkey
Peter Gabriel Mercy Street
Peter Gabriel Games Without Frontiers
Chicago Moving In
Chicago Ballet for the Girl in Buchannon: Moving In
Rod Stewart Tonight's the Night
Beastie Boys Slow Ride
U2 Promenade
Sade Maureen
Smithereens In a Lonely Place
Radiohead Paranoid Android
Duran Duran The Chauffeur
Eagles Hotel California
#hisenioriems

Let’s start by putting my experience into context. I have about 20 IEMs, from the Monarch MKIII, SA6 MKII, Performer 8, Galileo, Hexa, Heyday etc.

This IEM punches well above its weight class. The bass has excellent slam, mids are well presented for both male and female vocals. The soundstage with both switches up is fantastic, with excellent separation. They’re also very easy to drive.

I’d say they easily compete with the Performer 8 and SA6. For HIPHOP and classic rock they are better than both. I also got the white whale cable and could tell a difference between it and the stock cable. Never thought I’d say that, but there it is.

They EQ very well to the 5128 10dB target and have been my go to for the last few weeks.

Looks are equally as beautiful as anything in my collection. See the photos

Fit is great, but I did’t use the stock tips. Dunu Candy Large worked best. The case is also very nice, but not as easy to use with the white whale cable. Just be careful.

I’ve now placed my order for the Mega 5EST and hope to be blown away again.

Wonderful tuning and tonality. IEM that could be endgame for many unless you already fell into the rabbit hole of buying more expensive iem that are only just marginally better.

Wonderful IEM. Great value for the frequency response. It leads to natural and easy listening of all music.

Great case! best one out there for the price. Bought two for travel. My canon 2 and tea 2 are safe for what ever life throws at me. Thanks

Firstly I'd like to thank Hisenior for the amazing customer support throughout the process of making my desired custom version of the Okavango. I paid fully for the custom IEM with my own money.

The included packaging and accessories that come with the Okavango are outstanding. The amount you get, at this price point is superb. I don't think I have ever gotten an IEM so chalk full of accessories as the Okavango. The cable I received, which at least visually looks almost identical to a graphene cable I own, is very nice. Looks good, performs and behaves well. I'm not much of a cable believer outside aesthetics, comfort and minor change in sound (mainly due to material impedance) and for that I have no complaints at all. Plenty of included tips. An albeit not pocketable case, I will undoubtedly use this case when travelling as it fits multiple IEMs and is essentially a flight case for IEMs.

Now to sound: I have a large library of music spanding from late 60s all the way to music released just yesterday. I love looking for new music and have an ever growing, arguably too large library. If I had to mention a few things I do NOT listen to, K-pop and J-pop would be two popular genres I lack in my library. Having said that, the Okavango performs well with literally every genre I listen to. It's a warm sounding, soulful and fun allrounder that does everything well in my opinion.

BASS: Depending on whether you like a bass or not, left switch down turns it nicely down, while switch up can give you ear-tickling, chest thumping bass. It is not overly done at all, and only shows it's muscle if the song has a lot of bass. If not, it never overstays it's welcome. The bass is also medium-fast; meaning very natural sounding DD. As an example, I ordered the Penon 10th Anniversary Edition a while back - an IEM for 500 USD, praised by many for it's bass. I genuinely think the Okavango has superior bass. Overall I think the Okavango is a much better purchase than the Penon 10th, and that at 200 dollars less!

MIDS: Mids are lush and soulful. Not recessed or overly forward. I have a tendency to be sensitive to 2k and 4k peaks, and the Okavango never sounds too much to me. Just right 👌

HIGHS: Highs, much like the bass can depend on the switch. Personally I like sparkle and an enhanced high end and the Okavango hits the nail on the head for me with the switch up. If that's not your jam, then the right switch down tones down the treble by decent enough bit to likely not be offensive for anyone who prefers a more mellow high end.

Finally, onto COMFORT: I am quite picky when it comes to comfort. I have a small/medium sized ears and usually a lot of larger IEMs stick far out for me and can get uncomfortable over time, especially if they have a "custom" moulding to the shell. I would say the Okavango is medium sized, with no sharp edges and I can use it without issues for all hours of the day and never have it become uncomfortable!

TLDR: I love the Okavango. It plays all music well; it sounds fun and soulful and changes significantly depending on switch positions. I can use it all day without discomfort and at the price I'd gladly recommend it to anyone looking for a set around this price point!

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!