Name: TRUTHEAR Zero:BLUE2
Brand: TRUTHEAR
SKU: B0DZHC1H8F
Price: 64.99 USD

Key specs

Connection Type

Wired-3.5mmMost common

Wired-3.5mm92%Bluetooth8%

Wired-3.5mm is the most common — on 92% of the 39 in-ear monitors we've cataloged (of 39).

Has Microphone

Yes

False66%True34%

True appears on 34% of the 35 in-ear monitors we've cataloged (of 39).

Driver Size

10, 7.8 mmAbove average

10 mm

7 mm13 mm

above average for in-ear monitors — based on 23 of 39 we've cataloged.

Connectivity

Connection Type: Wired-3.5mm
Cable Type: 2-pin detachable

Microphone

Has Microphone: Yes

Sound

Driver Size: 10, 7.8 mm
Driver Count: 2
Driver Type: Dynamic
Frequency Response: 20-41000 Hz
Frequency Response High Hz: 41000 Hz
Frequency Response Low Hz: 20 Hz
Impedance: 5.8 Ω
Sensitivity: 119.5 dB/mW

Design

Color Options: Blue
Earbud Form Factor: In-ear
Detachable Cable: Yes

Features

Inline Controls: Yes

Identity

Model Number: ZERO:BLUE2

Release

Msrp Usd: 64.99 USD

SoundGuys review

Read the full review ›

SOUNDGUYS rating

6.7/ 10

Worth a look

Reviewed byJhaycee CalvezVideo Producer/WriterReviewed June 2025

Isolation6.5

Comfort & fit4.0

Design7.5

Portability8.0

Value6.5

The verdict

Great for gaming, but only for those looking at a bass-rumbling casual action gaming experience. For music listeners, the bass may be too much even for some bass heads. For those who want the bass to take center stage, this IEM is for you.

✓What we like

✓Bass heavy

✓Spatial width and depth

✓Flashy design

✓Separate cable with inline mic

✕What could be better

✕Fatiguing bass to some

✕Annoying to wear for long hours

Read the full SoundGuys review →

Lab data

How we test ›

Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.

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0 of 4 overlay slots used

TRUTHEAR Zero:BLUE2SoundGuys Headphone Preference Curve

Measured frequency response (dB) against the SoundGuys house target — the dashed curve. The closer the measured line tracks the target, the more neutral the tuning; peaks ride above the target, dips fall below it.

Frequency response — measurement data

TRUTHEAR Zero:BLUE2: frequency response, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)	Response (dB)
20	19.4
25	18.9
32	18.1
40	17.1
50	15.7
63	13.9
80	11.7
100	8.9
125	5.8
160	2.9
200	2.1
250	0.5
315	-0.7
400	-2.0
500	-2.9
630	-1.7
800	-1.1
1000	0.1
1250	2.0
1600	3.1
2000	4.1
2500	6.1
3150	8.0
4000	8.1
5000	6.6
6300	4.7
8000	4.6
10000	-3.2
12500	2.8
16000	4.1
20000	-15.0

TRUTHEAR Zero:BLUE2

Passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Higher on the chart means more attenuation.

Passive isolation — measurement data

TRUTHEAR Zero:BLUE2: passive isolation, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)	Attenuation (dB)
21	5.9
26	1.5
33	3.3
41	3.7
52	2.9
65	5.2
82	5.8
103	6.0
130	5.9
163	3.8
205	8.5
259	11.0
325	11.2
410	13.0
516	9.3
613	8.7
772	13.9
972	16.1
1220	21.9
1540	32.4
1940	41.3
2440	42.5
3070	36.0
3870	24.7
4870	34.8
6130	43.9
7720	41.3
9720	34.7
12200	36.3
15400	44.6
19400	31.9