40 €

Review published:




per Side






32 Ohm











108 dB








Daily Life


20 - 20000 Hz


It is always interesting to see how expectations are raised when information is leaked, or when someone better known makes a statement about something. The BLON BL-05 is such a hype phenomenon.
Before it was even available, it already got a very high reputation because of its popular predecessor BL-03, without having to do anything for it.
First the BL-05 was planned as a hybrid with a dynamic and a piezo driver. In the end it became a single dynamic driver, which is called "2nd Generation 10mm CNT Diaphragm Driver". With the Blon BL-03 it was "only" a "10mm Carbon Diaphragm Dynamic Driver".

BLON takes a very safe way with the driver selection and changes only small things in the tuning, which doesn't really make the BL-05 a different, independent IEM. A bit like MOONDROP and the Kanas Pro, Starfield and KXXS.



Whatever BLON is trying to tell us, it's big and fat on the packaging and I really hope that this is not the company description for B-L-O-N.
This was already a "running gag" for the CHI-FI community with the BL-03 and it's a little bit incomprehensible why they took it over.
With "Oppoty" I still don't know what this could mean.

If you could still choose how you want to wear it with the BL-03, if you had a suitable cable without earhooks at hand, the BL-05 can only be worn over the ear.
It has an interesting and independent design and is completely made of metal. This makes it a little bit heavier, but not more uncomfortable to wear.

The sound tubes are still a bit short, though, which didn't make the BL-03 very popular. It is not so easy to achieve a good fit with the quite good selection of silicone tips and one should best reach for some firmer foam tips, if available.
In the package, there is also a cloth bag for storage and the same cable as the BL-03, which is useful, but not very qualitative, or blessed with a pleasant feel.

Once you have achieved a perfect fit, the insulation is very good and the wearing comfort is also a bit more pleasant than with the BL-03.


What immediately stands out is the tamed bass. This one was put down a good bit. This makes the BL-05 appear subjectively more defined and brighter. However, warmth and body are lost in the process. Of course, this will please those who have criticised the BL-03's rather prominent, soft and somewhat bloated bass, but it will also disappoint bass fans who have grown fond of exactly this raised, but full-bodied and warm bass. The bass seems a bit faster and tighter on the BL-05, but is on a very similar level of quality. It sounds quite natural with its attack, even if it lacks some of the kick, firmness and pressure.
On the one hand, the bass of the BL-05 is certainly a matter of taste when it comes to quantity compared to the BL-03, but on the other hand I can see slight advantages in the swinging behaviour of the new driver.

The bass doesn't push the midrange as hard anymore, which makes it come more forward. Vocals are more in the foreground in the mix and sound very clear and energetic, but without slipping into screaming. I find the voice presentation of the BL-03 a bit more emotional and the mids fuller, but I can attest the BL-05 more definition and clarity. In the detail reproduction the two don't take anything. I like the midrange presentation of the BL-05 a bit more, but basically it is only influenced by the bass part. In contrast to the BL-03 I would say that the BL-05 copes a bit better with complex music because the driver simply reacts faster and more precise. Nevertheless, no qualitative quantum leap is to be expected here.

Subjectively, the trebles also seem to be a bit more accentuated by the bass rollback. I deliberately say subjective, as the frequency response shouldn't really allow any difference. Here it's interesting to see how the psychoacoustic perception changes, just by playing with the bass impact in the signature and again shows that you can and should not judge an in-ear only by its graph. For me, they sometimes sound a bit fake (Fix You (Live in Buenos Aires) - Coldplay) and don't have the greatest expansion, or it can get a bit artifact-like from time to time, which was already the case with the BL-03. Nevertheless they play quite pleasantly, without exaggerated hardness and sibilant emphasis. Overall, they can become tiring a bit faster than the BL-03 after a certain volume, which is due to the brighter sound perception.

The stage is on a similar level, but appears a bit more airy and tidy than on the BL-03. The latter also applies to the separation.


I think that BLON has landed quite a good grip with the new driver in terms of performance, even if the gain is minimal. Likewise, the slight tonal adjustments make perfect sense if they suit personal taste, because basically we have the same signature and only the bass makes a real difference. I can do something with both bass presentations.
On top of that, the new design has improved the wearing comfort, which was probably the biggest criticism of the BLON BL-03, even though there is certainly room for improvement here. It feels a bit as if an already good product has been warmed up just a little bit to win money instead of really thinking it through.

The BL-05 is still a great IEM in its price range and a great all-rounder. As far as sound quality is concerned, it is not really an upgrade, but rather an adjustment that could have been achieved with a good equalizer. Even the new driver doesn't help here. Nevertheless, due to the slight advantages in handling, I'd go for the BL-05 and screw up the bass again if I wanted to.



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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