BUDGET
IN-EAR

D4

EZAUDIO

Rating

Price

7.7

9 €

Review published:

12/2018

Driver

1

per Side

1

Dynamic

0

Balanced

Impedance

32 Ohm

Piezo

0

Sound

8

Bass

7

Mids

7.5

Trebles

Sensitivity

99 dB

7.5

Handling

8

Haptic

Z

Value

+

Daily Life

Frequency

20 - 20000 Hz

Intro

EZAUDIO was not yet known to me and so I was curious what to expect for the price of almost 10€.
I was more than surprised. The D4 is an in-ear with a dynamic 10mm driver and a classic design. What comes out of the small, inexpensive earphones is looking for in the price class of its equal. A clear purchase recommendation right from the start!

Handling

The D4 is made of metal and does not strive for a particularly innovative design. It is simple but ergonomic. The cables from the Y-split are a bit annoying because they look cheap. From the Y-split to the plug, they are still wrapped in fabric, but then you simply become hard rubber cables that knot easily.
The remote does what it's supposed to do and has good speech intelligibility.

Included in the package are different silicone tips and a carrying box, which is very valuable. Another positive aspect is the isolation of the outside world, especially with foam tips.

Sound

The D4 simply doesn't sound like an in-ear in the 10€ class, but easily keeps up with headphones up to 50€. This is really a pleasant surprise and an exemplary example of what Chi-Fi is capable of.

The bass is more prominent in the mid-range and brings across the demands of all genres well and precisely, without exaggerating. This has to be pointed out here, as the bass is boosted unbearably by the cheap in-ears and thus becomes spongy, as well as making the whole sound very dark.
Not so with the D4. Although the bass is a bit in the foreground, it doesn't cover the midrange or treble. If you want to achieve even more pressure and punch in the sub-bass range, simply push the silicon/foam tips a little more onto the nozzle to cover the air vents. With this mod even bassheads can have their joy.

In contrast to the higher ones, the lower mids are somewhat reduced, which makes lower voices sound slightly more distant and gives the whole thing a cooler timbre (changes slightly with the bass mod, which also works very well with the TIN AUDIO T2).
The mids are detailed and don't smear even on more demanding tracks. Guitars are crisp and the separation works best.

The treble has no peaks and can score with clarity and three-dimensionality. Sure, they don't play up to the very high regions, but far enough to offer a pleasant airiness and to display micro details well. They are also quite linear in frequency response.
This is rounded off by a nice wide stage, which doesn't have to hide in the depth, especially for the price. One should only know that they need a little more power due to the high resistance.

Outro

It's amazing how natural and balanced the D4 sound, compared to other in-ear to 10€.
The bass is not overemphasized, the mids don't drop too much despite the V-signature, seem natural and the treble can convince with its airiness.
From a musical point of view, this is a much more expensive in-ear.
Only the cable is a small drop of bitterness. It only helps to buy them until someone realizes that they are much too cheap for what they can do!

Legend

Haptic:

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


Value:
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)

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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​

D4

D4

X3

X3

Second Opinion

Head-Fier Otto Motor

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CHI-FIEAR © 2020 by David Hahn

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