DRIVER TECHNOLOGY

The Zero:2 uses a newly developed 10 mm dual-cavity dynamic driver with a PU + metal composite diaphragm for faster transients, tighter bass, and lower distortion. The dual rear chamber improves extension and reduces resonance, allowing clearer sound even at high volume. Housed in a resin shell with metal faceplates, it features standard 0.78 mm 2-pin connectors for easy cable upgrades. Despite its price, the build is solid, lightweight, and ergonomic for long listening sessions.

TUNING PHILOSOPHY

Co-tuned with Crinacle, the Zero:2 follows a Harman-inspired balance with +3 dB more bass than the original Zero. The low end is punchy yet controlled, keeping mids clean and warm. Vocals sound natural with a fuller tone, while treble is gently relaxed for a smooth, non-fatiguing presentation. The slightly dipped upper treble reduces sharpness, making the Zero:2 ideal for long, enjoyable listening with accurate but musical tonality.

CABLE, CONNECTIVITY & INSIDE THE BOX

• Silver-plated OFC detachable cable (3.5 mm or USB-C, mic optional).

• Clear resin housings with brushed metal faceplates.

• Silicone tips (5 pairs), user manual, and the IEMs themselves.

• carrying case.

OUR VERDICT

Who it’s for: Listeners wanting clean Harman-style tuning with a tasteful bass boost. Ideal for everyday music—pop, acoustic, indie, and general casual listening.

Strengths: Balanced tonality, tight bass, clean mids, relaxed treble, very low distortion, easy to drive, excellent value. High-quality detachable cable is a standout bonus.

Limitations: Treble is smooth rather than sparkly; soundstage is intimate; stock tips are basic; bass-heads may want more slam.

Value: Exceptional—one of the top-performing IEMs around its price, delivering accuracy, comfort, and refinement well above expectations.

AFTER-SALES & WARRANTY (SHARMAZ NEPAL)

Zero:2 buyers receive a 6-month warranty covering driver faults, imbalance, and internal failures. Cables and eartips have a 15-day replacement period. Sharmaz Nepal provides setup help, tip recommendations, and pairing guidance to get the best performance. Physical damage isn’t covered, but affordable repairs and replacement parts are available.

• Brand: 7Hz
• Model Name: Salnotes Zero 2
• Driver Type: Dynamic Driver
• Driver Size: 10 mm
• Diaphragm: Composite Polymer Diaphragm
• Magnet Structure: High-performance dual-cavity design
• Impedance: 32 Ω
• Sensitivity: 109 dB
• Frequency Response: 20 Hz – 20 kHz
• THD: ≤ 0.2%
• Shell Material: Lightweight Resin
• Cable Type: Detachable 0.78 mm 2-Pin
• Cable Material: Oxygen-Free Copper
• Plug Type: 3.5 mm
• Replaceable Cable: Yes
• Inbuilt Mic: Optional variant
• Style: Ear Hook