The 7HZ x Crinacle Zero 2 Earphone is an In-Ear Monitor (IEM) resulting from the second collaboration between audio brand 7HZ and renowned audio reviewer/YouTuber Crinacle.¹ Building upon the success of the original Salnotes Zero, the Zero 2 is tuned to offer a warmer, more engaging sound signature with enhanced bass response, catering to a wider audience.² It remains a top contender in the budget audiophile segment.³

Description

The 7HZ x Crinacle Zero 2 Earphone features a refined tonal profile compared to its predecessor.⁴ While the original Salnotes Zero was known for its strict neutrality following the Harman Target curve, the Zero 2 introduces an approximate 3dB boost in the low frequencies for a more powerful and textured bass presence, offering a more fun and immersive listening experience.⁵ The midrange also receives a slight enhancement in body and warmth, providing a fuller sound for instruments and vocals without sacrificing clarity or suffering from bass bleed.⁶ The build maintains a similar aesthetic to the original, often featuring translucent shells and a detachable 0.78mm 2-pin cable.⁷

Features

• Enhanced Tonal Balance with More Bass: The main highlight is the updated tuning by Crinacle, adding more bass impact and extension (approx.⁸ +3dB) for a more vibrant and engaging sound signature while maintaining excellent tonal quality.⁹
• New 10mm Dynamic Driver: Utilizes a newly developed 10mm dual-cavity dynamic driver with an upgraded PU+Metal composite diaphragm for heightened responsiveness, resulting in tighter, punchier bass and improved clarity.¹⁰
• Improved Midrange Warmth: The midrange has an enhanced body and warmth, which contributes to a fuller, more natural sound for vocals and instruments.¹¹
• Upgraded Detachable Cable: Comes with an improved high-purity, silver-plated oxygen-free copper cable with a coaxial structure, enhancing durability and audio transmission.¹² It uses the standard 0.78mm 2-pin connector, allowing for easy cable replacement or upgrade.¹³

Specifications

Specification	Detail
Driver	10mm Dynamic Driver (Dual-Cavity, PU+Metal Composite Diaphragm)
Impedance	32Ω
Frequency Response	10Hz – 20kHz
THD (Total Harmonic Distortion)	$<1\%$ at 1kHz
Sensitivity	$108\text{dB/V}$ at 1kHz (Equivalent to $\approx 93.1\text{dB/mW}$)
Cable Connector	Detachable 0.78mm 2-Pin
Plug Type	3.5mm Single-Ended (or optional Type-C/Mic versions)

FAQs

Q: What is the main difference in sound between the 7HZ x Crinacle Zero 2 and the original Salnotes Zero?

A: The Zero 2 is tuned for a warmer, more fun, and engaging sound compared to the original, which was more strictly neutral. The Zero 2 has a noticeable +3dB increase in bass presence, a fuller midrange, and a slightly smoother, less energetic treble, making it a better all-rounder budget IEM for various music genres.

Q: Does the 7HZ Zero 2 require a separate amplifier (AMP)?

A: With an impedance of 32Ω and a sensitivity of $108\text{dB/V}$, the Zero 2 is relatively easy to drive and will work well with most modern smartphones, laptops, and basic dongle DACs. However, due to its efficiency rating (approximately $93.1\text{dB/mW}$), a slightly more powerful source may be beneficial to reach higher listening volumes without distortion.

Q: Is the cable on the 7HZ Zero 2 removable?

A: Yes, the 7HZ x Crinacle Zero 2 features a standard detachable 0.78mm 2-Pin connector, allowing users to easily replace the cable for customization, longevity, or to switch to balanced or wireless options.

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