7Hz x Crinacle Zero:2 (Salnotes Zero 2) Dynamic Driver IEM – Silver

Experience refined tuning, stronger bass, and impressive detail with the 7Hz x Crinacle Zero:2 (Salnotes Zero 2) – Silver, the updated generation of the popular 7Hz Salnotes Zero developed in collaboration with renowned audio reviewer Crinacle.

The Zero:2 features a newly developed 10mm dual-cavity dynamic driver with a PU + metal composite diaphragm, delivering faster response, stronger low-frequency impact, and improved clarity. Compared with the original Salnotes Zero, the Zero:2 adds approximately 3dB more low-frequency energy, giving music and games a fuller, warmer, and more engaging presentation while maintaining clean mids and balanced overall tuning.

The Silver version combines a lightweight IEM shell with a detachable 0.78mm 2-pin cable and an upgraded silver-plated high-purity oxygen-free copper cable, making it suitable for music listening, gaming, movies, portable audio, and everyday use.

Key Features

• Crinacle-Tuned Sound Signature – Developed in collaboration with Crinacle for a balanced yet engaging sound presentation.
• Upgraded 10mm Dynamic Driver – New dual-cavity driver improves bass response, speed, and overall clarity.
• PU + Metal Composite Diaphragm – Designed for faster diaphragm movement and improved transient response.
• Enhanced Bass Response – Approximately +3dB more low-frequency presence compared with the original Salnotes Zero.
• Fuller Midrange – Slightly warmer low-mid tuning adds more body to vocals and instruments without excessive bass bleed.
• 10Hz–20kHz Frequency Response – Covers a wide range for music, gaming, movies, and general listening.
• 32Ω Impedance – Easy to use with many phones, laptops, handheld gaming devices, DACs, and portable audio players.
• 108dB/V @ 1kHz Sensitivity – Efficient enough for common portable sources.
• Low Distortion – Rated total harmonic distortion of <1% at 1kHz.
• Detachable 0.78mm 2-Pin Cable – Makes cable replacement and upgrades easier.
• Silver-Plated OFC Cable – Upgraded high-purity oxygen-free copper cable with silver plating.
• Wired IEM Design – No battery, Bluetooth pairing, or charging required.
• Multiple Ear Tip Sizes – Helps users achieve a more secure fit and better acoustic seal.
• Silver Finish – Clean, modern styling suitable for everyday listening and gaming setups.
• Excellent for Music & Gaming – Balanced tuning and improved bass make the Zero:2 suitable for a wide variety of content.

Specifications

The manufacturer also offers the Zero:2 in 3.5mm with microphone and USB Type-C with microphone variants, so the connection specification should match the exact retail SKU. The standard Silver no-microphone version is available with a 3.5mm plug.

Tuned in Collaboration with Crinacle

One of the biggest attractions of the Zero:2 is its tuning collaboration with Crinacle, known for his extensive headphone and IEM measurement database and audio-review work.

The Zero:2 builds upon the successful tuning philosophy of the original Salnotes Zero while adjusting the sound to appeal to a wider range of listeners.

The result is a sound signature focused on:

• Stronger Bass
• Clean Vocals
• Natural Midrange
• Controlled Treble
• Good Tonal Balance
• More Engaging Overall Presentation

7Hz describes the Zero:2 as maintaining the tonal strengths of the original while adding more low-frequency impact and warmth.

New 10mm Dual-Cavity Dynamic Driver

The Zero:2 uses a newly developed 10mm dynamic driver rather than simply reusing the original Zero driver.

Its dual-cavity design and upgraded PU + metal composite diaphragm allow faster diaphragm movement, which helps improve transient response and bass control.

This helps deliver:

• Stronger Bass Hits
• Better Bass Extension
• Cleaner Note Definition
• Improved Speed
• Clearer Instrument Separation
• More Responsive Gaming Audio

Approximately 3dB More Bass

One of the biggest changes from the original Salnotes Zero is the bass tuning.

The Zero:2 adds approximately 3dB of additional low-frequency gain, resulting in deeper and more powerful bass without turning the IEM into an excessively bass-heavy model.

The additional low end benefits:

• Electronic Music
• Hip-Hop
• Pop
• Rock
• Movies
• Gaming Explosions
• Vehicle Sounds
• Cinematic Effects

Listeners who found the original Zero slightly lean may prefer the fuller presentation of the Zero:2.

Fuller & Warmer Midrange

The Zero:2 also introduces slightly more warmth into the lower midrange.

This gives additional body to:

• Male Vocals
• Female Vocals
• Guitar
• Piano
• Drums
• Acoustic Instruments

7Hz specifically notes that the low-mid warmth provides more fullness while keeping the sound clean and avoiding excessive bass bleed into the mids.

Balanced Treble Presentation

While the Zero:2 adds more bass, the tuning remains focused on tonal balance rather than exaggerated low frequencies.

Its treble presentation aims to retain detail and clarity while providing a smoother overall balance than many aggressively bright budget IEMs.

This makes the Zero:2 suitable for longer listening sessions across different genres.

10Hz–20kHz Frequency Response

The Zero:2 is rated for a frequency response of:

10Hz – 20,000Hz.

The extended low-frequency rating supports its improved bass-focused tuning, while the upper range covers the standard audible treble spectrum.

32Ω Impedance

With a rated impedance of 32 ohms, the Zero:2 is relatively easy to power from common consumer electronics.

Suitable sources can include:

• Smartphones with 3.5mm Output
• USB-C DAC Adapters
• Laptops
• Desktop PCs
• Gaming Handhelds
• Portable DACs
• Digital Audio Players
• Compatible Game Controllers

A dedicated high-power headphone amplifier is generally not required for normal listening levels.

108dB/V Sensitivity

The Zero:2 is specified at approximately 108dB/V @ 1kHz sensitivity.

This makes it practical for portable listening while still benefiting from a clean source or quality DAC where available.

Upgraded Silver-Plated OFC Cable

The cable is another major improvement over the original generation.

7Hz equips the Zero:2 with a high-purity oxygen-free copper cable with silver plating. It uses a coaxial structure designed for improved durability and signal transmission.

Benefits include:

• Detachable Construction
• Easier Cable Replacement
• Upgrade Flexibility
• Improved Durability
• Clean Signal Transmission

Detachable 0.78mm 2-Pin Connection

The Zero:2 uses the popular 0.78mm 2-pin IEM connection.

A detachable cable provides several advantages over permanently attached earphone cables.

If the cable becomes damaged, users can replace the cable without replacing the entire IEM.

It also allows enthusiasts to experiment with compatible aftermarket cables.

Comfortable In-Ear Monitor Design

The Zero:2 uses a lightweight IEM-style shell intended to sit securely inside the outer ear.

A proper fit is important because the ear tip seal directly affects:

• Bass Response
• Sound Isolation
• Overall Tonal Balance
• Comfort
• Stability

The package includes multiple silicone ear-tip sizes, allowing users to select the size that provides the best seal.

Passive Noise Isolation

The Zero:2 does not use electronic Active Noise Cancellation.

Instead, it relies on the physical seal created by the IEM and silicone ear tips to reduce surrounding sound.

A properly fitted tip can help reduce distractions when listening:

• At Home
• At Work
• While Commuting
• In Gaming Environments
• In Cafés
• During Travel

Excellent for Music

The Zero:2's combination of improved bass and balanced tuning makes it suitable for a wide range of music genres.

Ideal for:

• Pop
• Rock
• Hip-Hop
• Electronic
• Jazz
• Classical
• Acoustic
• Metal
• R&B
• Soundtracks

The added bass makes the Zero:2 more energetic than the original Zero while keeping the midrange clean.

Great for Competitive Gaming

IEMs have become increasingly popular among gamers because they are lightweight and can provide strong positional audio without the bulk of a full-size gaming headset.

The Zero:2 can reproduce important gaming cues such as:

• Enemy Footsteps
• Gunfire
• Reload Sounds
• Vehicle Movement
• Environmental Effects
• Directional Sound Cues

Its balanced tuning makes it particularly suitable for gamers who want both competitive detail and enjoyable bass response.

Great for FPS Games

The Zero:2 is a strong choice for games such as:

• Counter-Strike 2
• VALORANT
• Call of Duty
• Fortnite
• Apex Legends
• PUBG
• Rainbow Six Siege
• Battlefield
• Overwatch

The cleaner midrange and treble help keep important positional information audible, while the increased bass gives explosions and weapons more impact.

Great for Single-Player Gaming

The enhanced bass of the Zero:2 also benefits cinematic titles.

It works particularly well for:

• Action Games
• RPGs
• Horror Games
• Racing Games
• Open-World Games
• Story-Driven Games

Bass-heavy environmental effects, soundtracks, and cinematic sequences gain additional weight compared with the original Zero.

Great for Gaming Handhelds

Because the Zero:2 is a wired IEM with manageable 32Ω impedance, it is also practical for compatible handheld gaming systems and portable PCs.

Potential uses include compatible:

• Steam Deck
• ROG Ally
• Lenovo Legion Go
• Gaming Laptops
• Portable PCs
• Nintendo Systems with Suitable Audio Output

A wired connection also avoids Bluetooth audio latency and eliminates battery charging.

No Battery Required

Unlike wireless earbuds, the Zero:2 requires:

• No Charging
• No Bluetooth Pairing
• No Battery Management
• No Wireless Codec Selection

Simply connect it to a compatible audio source and start listening.

This makes it particularly useful for long gaming sessions, travel, and everyday listening.

Silver Color Design

The Silver Zero:2 provides a clean and understated look suitable for both gaming and everyday audio setups. Silver is one of the official Zero:2 color options alongside Blue, Orange, and Pink.

The design works well with:

• Silver Laptops
• White Gaming Setups
• Minimalist Desks
• Portable DACs
• Gaming Handhelds
• Audiophile Setups

Zero:2 vs Original Salnotes Zero

The Zero:2 is more than a simple color refresh.

Compared with the original model, key updates include:

The biggest practical difference is a warmer, fuller and more energetic sound, particularly in the bass region.

Perfect For

• Audiophile Beginners
• Budget IEM Buyers
• Music Listening
• PC Gaming
• FPS Gaming
• Competitive Gaming
• Gaming Laptops
• Gaming Handhelds
• Smartphones
• Portable DAC Users
• Movies
• YouTube
• Streaming
• Everyday Listening
• Crinacle Fans
• Salnotes Zero Owners Looking for More Bass
• Wired Audio Enthusiasts

Why Choose the 7Hz x Crinacle Zero:2?

• Tuned in collaboration with Crinacle.
• Updated 10mm dual-cavity dynamic driver.
• PU + metal composite diaphragm.
• Approximately 3dB stronger bass than the original Zero.
• Fuller low-mid presentation.
• Clean and balanced tonal character.
• 10Hz–20kHz frequency response.
• 32Ω impedance.
• 108dB/V @ 1kHz sensitivity.
• Less than 1% THD at 1kHz.
• Detachable 0.78mm 2-pin cable.
• Upgraded silver-plated oxygen-free copper cable.
• No battery or charging required.
• Lightweight IEM design.
• Multiple ear-tip sizes.
• Suitable for music and gaming.
• Excellent entry point into enthusiast IEMs.
• Attractive Silver finish.
• Brand: 7Hz.
• Model: Zero:2 / Salnotes Zero 2.

Package Contents

Typical standard packaging includes:

• 1 × Pair of 7Hz x Crinacle Zero:2 IEMs – Silver
• 1 × Detachable 0.78mm 2-Pin Cable
• Multiple Pairs of Silicone Ear Tips
• 1 × User Documentation / Manual

Important: The Zero:2 is available from the manufacturer with several cable configurations, including 3.5mm without microphone, 3.5mm with microphone, and USB Type-C with microphone. For the standard Silver 3.5mm no-microphone version, microphone and inline-call controls are not included.

Gaming Note: This is an enthusiast-style IEM rather than a traditional gaming headset. The standard no-microphone version provides game audio only; voice chat requires a separate microphone or a compatible microphone-equipped replacement cable.

Compatibility Note: Devices without a native 3.5mm headphone output require a compatible USB-C, Lightning, or other audio adapter/DAC depending on the device.