35 €

Review published:




per Side






18 Ohm











103 dB








Daily Life


20 - 20000 Hz


With the ALTAIR•RA, HILL AUDIO introduces a slightly improved version of the ALTAIR, which is reflected in a second cable and a different alloy of the sound chamber and the nozzle to improve the sound. Since I own the predecessor, which is the same in-ear as the PAIAUDIO DR2, as well and can't make out any earth-shattering differences, the review is almost one to one the same.


The extraordinary thing about the ALTAIR•RA is that the housing is completely cast out of resin. And when I say complete, I mean it because there is no cavity. The dynamic driver is virtually preserved in the case and only has a small tube outside to "breathe". Another, thicker tube leads to the sound opening. All this is completely surrounded by resin. There are no air bubbles, which speaks for a good workmanship/production. The resin piece is also free of coarse unevenness and rough spots. In contrast to the DR2 or ALTAIR, brass is used as an alloy instead of aluminium, which is supposed to influence the sound.

The ALTAIR•RA not only looks like a custom IEM, it also wears like it. Very ergonomic and secure in fit, it should fit almost any ear despite its size (exceptions confirm the rule).

As cable we get a solid 4-core cable with remote and microphone, as well as a gold and silver coated upgrade cable.

With a proper fit and ideally foam tips, you get a really good isolation. Since there are no other openings except for the small air hose and we therefore almost speak of a completely closed case, nothing of the music penetrates to the outside. There is no cavity in the interior and so the sound penetrates directly and without detours into our ears! But there is also little or nothing to come through to the inside, which should please especially musicians.


Powerful, natural, disciplined and dynamic with a slight tendency to exaggerate, describes the ALTAIR•RA quite well.

The bass has an incredible impact, which will put a smile on every bass lover's face. It plays quite linear from top to bottom, whereby the sub bass is pushed a little bit again. This allows not only to hear the bass to its full extent, but also to feel it. The ALTAIR•RA gives every genre a good ladle of bass, which tastes good because it is well seasoned, but not salty. Bass guitars sound so energetic and powerful that you inevitably look for songs in your library where they stand out - AnnenMayKantereit - " Es geht mir gut (live)".
Hip-Hop is just as excellent for the ALTAIR•RA. Because of the low bass there is a lot of steam behind every song. Amazing is the fact that the bass remains controlled and has texture. Sometimes he thinks it's just too good and starts to get a little booming when the music already has a strong bass part.

If you now think that the mids of such a bass machine go completely under, you are mistaken. Of course the bass doesn't manage to leave the mids untouched, but they benefit with a pleasant warmth and a voluminous body. They are clear and detailed and manage to give the bass slogan without having to fight too hard against it. Here, too, we have a basic naturalness in sound, especially when it comes to voices. Guitars sound crisp without getting shrill and trumpets have a natural timbre. In addition, the mids are almost lively and do not hide behind the treble and bass, even if it is a V-signature. However, you should keep an eye on the volume, as the mid-range in the upper range becomes a bit exaggerated, which can be tedious, as they have their highest peak between 2 and 5 kHz.

After the mid-peak it goes straight downhill in terms of the frequency response and the highs then return with a further smaller increase of 9-10 Hz. They have thus seen an above-average expansion in the price segment and for a single dynamic driver. Here, too, the keyword is natural, although they could be more present in the lower trebles. They are airy and playful, even if they don't show much brilliance now. But there are no sibilants, or a sting in the ear. They can even handle "problematic" voices like SIA's without any problems. They don't reveal every micro detail, but the level of detail and resolution is more than convincing.

The stage is in a good average range in terms of depth, but the wide range is quite impressive. The separation is also very convincing, since instruments rarely overlap (partly due to poor mastering) and can be easily followed.


It's hard to tell the difference between the ALTAIR•RA and the DR2/ALTAIR, which is basically due to the cable choice and the different alloy, otherwise we have the same in-ear. In a direct comparison, the ALTAIR-RA appears a bit more homogeneous and smoothed (subjective perception), which one would not have expected with the frequency response, by the way, because it looks more strange than what one hears.
I am still absolutely convinced of the sound of this in-ear. The bass can take the paws out of you, but it can also exaggerate it. The mids are lively, the voices authentic and the highs convince with their clear, unagitated and detailed way.
If you are looking for natural, bass intensive and dynamic sound you should take a look here. I also recommend these IEM musicians, who are not looking for absolute neutrality, but can also tolerate some fun 😉

For the price one gets IEM in custom format incl. extensive accessories, which is difficult to top in the total package and thus represents a small advantage compared to the predecessor, but this also costs 10 € more.

You can get the ALTAIR•RA from the HILL AUDIO Facebook page by writing to the owner. He accepts PayPal and sends the In-Ears also with a tracking number.
If you have the possibility to order via Shopee, you can also go the direct way.




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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