Review published:




per Side






18 Ohm











112 dB








Daily Life


14 - 40000 Hz


After the bass monster, the A-HE03 (3 driver hybrid), WHIZZER releases after a long time with the HE01 a single-DD, which impresses with a coherent and natural tonality and has a quite airy and in the stereo stage decidedly good presentation, but can not necessarily stand out from the crowd, but still very competitive.

Still, it's been a long time since I've had such a relaxed and authentic signature in my ears. Perhaps a BLON BL-03 in adult.


The HE01 doesn't make the most ergonomic impression on the outside, but it still wears pleasingly comfortably. However, it does not necessarily make a 100$-IEM impression for my taste. The workmanship and the plastic case are a bit clumsy and no faceplate in pearl design can help.

However, the packaging and its contents make quite an impression. There is a round metallic transport box, an attractive 4-core copper cable (even though I generally appreciate somewhat thicker cables for haptic reasons) and two types of silicone tips in 3 sizes (S, M, L). The whole thing is attractively presented, even if the packaging size is perhaps a bit exaggerated.

Isolation is average without music, but decidedly good with music even at low volume.


The HE01 is something of the warmer type and has an authentic and versatile tonality. So to speak, it's a continuous burner in everyday life through the favorite playlist, without the very big analytical claim, but definitely with accents.

The bass is quite prominent and has a noticeable punch. Sometimes it is perhaps very slightly over the top (depending on the genre), but I enjoy it and it does not create fatigue. It warms up the mids, but not to a degree that I would consider unnatural or overdone. Still, it's a bit wobbly at times, meaning it's not always steady and precise. When things get more musically demanding, it becomes harder to view the bass separately and it becomes more of a stretchy and opaque mass.

Since in the midrange the most important information is hidden musically as well as in everyday life, we make much of whether an IEM sounds natural or authentic. Of course, the bass and treble also have to be considered in interaction with the mids when it comes to tonality, but the mids have a very large part in it. This is also clearly the strength of the HE01. It sounds pleasant and realistic in the mids, although certainly not perfect. For this, the mids are too much immersed in the V and sometimes they sound a bit hollow as a result, as well as fat in the lower range, but voices still seem very natural and above all one has to credit the HE01 for its relaxed playing style.

The trebles are not particularly present in the lower range and exactly this lack of presence is also partly audible. Although it ensures that voices and instruments are not unnaturally emphasized, they are sometimes swallowed up, or more precisely, they lack assertiveness here and there, which then affects the separation. For me, the highs are very coherent in combination with the bass and mids and they provide enough information, but they do not necessarily invite analytical listening. They play it safe and provide a relaxed listening experience, which is not boring. Since the HE01 can still show levels beyond 10 kHz, the presentation seems quite airy as well as transparent in the high frequencies, making it a perfect contrast to the somewhat warm and heavier bass/mids.

The stage is quite pronounced in the panorama, but the space created is not fully utilized. Thus, one has more the feeling of a stringent left, center, right separation than that even the spaces in between are completely occupied. This is complaining on a high level and the HE01 certainly wants to distinguish itself less with technical features and rather relies on an authentic tonality, but here there are deductions in the B grade. The separation is okay and the layering is certainly not above average, but so far solid and with enough entertainment value.


The HE01 remains a tonally appealing, relaxed and natural sounding IEM with V-signature and good all-rounder properties. The design may be a matter of taste, but the comfort level is quite good.
If you're looking for a very solid-sounding IEM and are a bit more concerned with musicality than technical features (even if those are just as rock-solid), the HE01 is not a bad choice.
Especially guitar-heavy rock ballads have always picked me up with the HE01.



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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