75 €

Review published:




per Side






16 Ohm











109 dB








Daily Life


10 - 40000 Hz


TANCHJIM has hit the bull's eye with the OXYGEN and would now like to expand their portfolio with the BLUES with an IEM under 100 €, where so far only the CORA was the sole driving force. The CORA is the fun V-signature model, whose sound is quickly accepted by a broad mass. The BLUES, on the other hand, is more of a niche product, and with its brighter, more neutral tuning is more likely to satisfy audiophile demands, as long as a brighter orientation is preferred.

For me the BLUES is a technically potent IEM, which also picks me up in terms of sound.


The TANCHJIM BLUES is one of the most compact in-ears worn over the ear I know. The round shape of the housing also guarantees excellent wearing comfort regardless of ear shape and size of the ears.
The material is a mixture of metal and plastic, which gives the BLUES a valuable appearance due to the polished surface, even if you clearly notice a difference in quality compared to the HANA or OXYGEN. Nevertheless the BLUES can be described as light, comfortable and quite robust. The BLUES is available in blue and grey.

The cable is unfortunately not removable, which of course always carries the risk of losing the whole headphone if the cable breaks. If you want to look at it positively, the manufacturer doesn't want us to distort the sound with 3rd party cables (even if the cable issue and its sound influence can be quite controversial), but for me it's more or less a budget question and maybe technically, due to the limited space on the housing, it's not that easy to implement.
This is certainly a deduction in the B grade, but for me it doesn't always have to be a replaceable cable. So you don't have to argue about which connection is the better one (2-Pin, MMCX etc.) and connected to that you can also avoid a source of error, like a bad contact or insufficient hold.
I'm more bothered by the enclosed rubber covers, in which you can put the cable and thus achieve a secure hold over the ear. This rubber stiffener does not take the cable very well. Here a narrower and stiffer opening should have been chosen.
Nevertheless, from the Y-split on, the cable can be adjusted with a slipper, which provides a better grip.

Included in the scope of delivery are a number of silicone tips with different opening sizes and a cloth bag. The packaging design is also quite nice with its retro look.

TANCHJIM doesn't necessarily make a name for itself with outstanding isolation. Outside sounds always penetrate into the inside, even when music is playing, unless you want to enjoy a hearing aid at 30. But this in turn allows you to participate in the outside world to a limited extent, which can provide security!


The BLUES comes with an unexpectedly neutral signature and thus forms the counterpart to CORA. This may not fascinate everyone, but it is a pleasing budget alternative for more demanding music lovers who are looking for a balanced and brighter tuning with very good technical characteristics.

The bass clearly focuses on the mid-bass and dives down quite quickly in the sub-bass. Nevertheless, it can still contribute enough impact so that even electronic music or hip-hop is not an anemic listening experience. It acts fast, is quite punchy and linear towards the midrange, apart from the sub-bass drop. If you like smooth, fast and precise bass, you will enjoy the BLUES. Sometimes it's a bit too light for me, but the BLUES won't fail because of the bass quality.

Where the OXYGEN dips in the frequency response, the BLUES positions itself with clear peaks (2-3 kHz and around 6 kHz). This can also be heard, but the presumed negative side effects are largely absent. The OXYGEN appears more balanced and softer in the midrange, but the BLUES also has the TANCHJIM gene. The mids are a bit more demanding and biting, but they don't cross any boundaries, so that they don't cause any problems for me even on longer listening periods. They also sound a bit brighter than in OXYGEN, but without slipping into the unnatural. I find the mids very spatial and even though the bass is not very authoritative, they still have enough body and warmth for me, so it doesn't get sterile. But if you're looking for powerful, thick and warm mids you won't find them in the BLUES. Here one is rather presented with clarity and transparency. But sometimes it is a bit too thin for me, which can cause emotions to get lost.

The highs are quite similar to OXYGEN, despite the 6 kHz peak. Also here you notice the company affiliation. They are rich in details, open and also have a slight brilliance in the high frequencies, but without putting absolute friends of the highest frequencies into hot flashes. They are a bit more accentuated in the sibilants and in the rarest cases a bit hotter than in the OXYGEN, but for me still absolutely tolerable. They sound a bit more technical and not so organic, but that is constructive criticism on a high level. I can understand if the BLUES seems a bit too bright and less musical to some people, but for some genres this can be exactly the kick you are looking for, generally if you like it a bit more analytical, but without wanting to write a thesis about it directly.

Also with BLUES, as with OXYGEN before, the stage convinces me. Since a brighter signature generally makes the stage mostly appear spatial, separated and wide, these characteristics also apply to the BLUES due to the technically potent driver. In the depth the OXYGEN is better positioned, but in the panorama picture and on the Y-axis, they don't take too much.


With 75 € the BLUES does not fall into the absolute budget class and the purchase wants to be well considered, since the BLUES with its tuning certainly does not appeal to the broad masses. If you are looking for an inexpensive alternative to the OXYGEN in terms of technical features and can make friends with the bright but not unpleasant signature, you should take a look. In addition there is excellent wearing comfort and a robust design. Only the fixed cable remains a small downer.

Thanks to OARDIO for the review unit.



Here the processing plays a role and the usability of the scope of supply. Additionally the appearance, wearing comfort and robustness.

Here I evaluate for me subjectively the price/performance ratio - does not flow into the evaluation!

Z: No Brainer

A: money well spent

B: all right, you can do

C: gives better for less money

D: overpriced

E: collector's price

Daily life:
Here, I focus on the long-term audibility and whether I can hear it well out of the box. This is of course very subjective and therefore only a minimal deduction or bonus. 

(-0.1, 0, +0.1)


Rating in Letters

S: 9.5 - 10

A: 9.0 - 9.4​

B: 8.0 - 8.9​

C: 7.0 - 7.9

D: 6.0 - 6.9​
E: 5.0 - 5.9​

F: 0.0 - 4.9​







Second Opinion


CHI-FIEAR © 2020 by David Hahn

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