Price: $319–$329
Configuration: Hybrid Dynamic + PZT Bone Conduction • 4-way system
TL;DR: A smaller, lighter aluminum shell, a re-engineered PZT bone-conduction driver with Japanese silver-palladium ceramic, a higher-flux magnetic circuit plus a dual-cavity 12 mm dynamic driver—WINTER II delivers a silkier, airier, and more spacious presentation with better transient speed and control.
Why WINTER II?
BQEYZ’s original WINTER proved that bone-conduction could be musical, not gimmicky. WINTER II takes the concept further: a 22% smaller housing for comfort, a new PZT ceramic with 5% silver-palladium for higher sensitivity and “sparkle without sting,” and a redesigned magnetic circuit for cleaner dynamics. It’s the same snow-clear aesthetic, now with more atmosphere, better layering, and a quieter background.
Headline Upgrades
-
Re-engineered PZT bone-conduction driver
Utilizes Japanese silver-palladium paste (Pd ratio raised from 2% → 5%) to improve conductivity and sensitivity; treble is brighter yet refined, micro-detail pops without harshness. -
12 mm custom dual-cavity dynamic driver
Independent airflow paths reduce turbulence and phase error, lowering nonlinear distortion while extending bass depth and grip. -
Higher-flux magnetic motor + DAIKOKU DCCA coil
Punchier macrodynamics, crisper separation, and faster transient response in the mids and highs. -
5-axis CNC aluminum shell, anodized finish
High rigidity pushes the natural resonance higher and lowers unwanted amplitude—less smear, blacker background. -
22% size reduction & 6.3 g per ear
A slimmer, snugger fit improves comfort and bone-conduction efficiency.
WINTER vs WINTER II vs WINTER Ultra (Quick Look)
How It Sounds
- Bass: The 12 mm dual-cavity DD reaches deeper with firmer contours. Sub-bass is present but disciplined; mid-bass bloom is controlled for a cleaner stage.
- Mids: Neutral-to-slightly-warm center with excellent separation; vocals are lucid and emotive, guitars and piano have crisp transients without glassy edges.
- Treble & Air: The upgraded PZT bone-conduction driver brings glossy highs and airy “halo” around cymbals and string overtones. Micro-detail snaps into place while sibilance is kept in check.
- Stage & Imaging: Open, organic space with stable center image and layered depth; positioning feels precise for live recordings and game/film ambience.
- Dynamics: Faster attack and recovery; macro hits slam harder while micro contrasts (reverb tails, room cues) are easier to follow.
Best for: modern jazz, orchestral, acoustic, J-pop/K-pop, indie/folk, ambient & instrumental electronica.
Sources: scales with clean portable DAC/amps; also easy to run from dongles (3.5 mm SE or optional Type-C).
Engineering Highlights
- PZT bone-conduction system: drives the aluminum shell via a vibration unit, transmitting energy as subtle structure-borne sound; the stiffer shell raises resonance frequency and reduces parasitic vibrations → cleaner background.
- Magnetic circuit optimization: stronger flux density improves linearity; with DAIKOKU DCCA voice coil, the driver tracks current more accurately for higher resolution.
- Dual-cavity airflow: independent chambers smooth pressure transitions, lowering distortion especially in low-to-mid bands.
- Cable: 4-core single-crystal copper, Litz T2 (multiple enamel-insulated strands) to suppress skin effect; supple hand-braid for low resistance and transparent tone.
Comfort & Build
- 5-axis CNC aluminum with flawless chamfering; anodized for wear/corrosion resistance.
- Ergonomic nozzle & angle ensure a stable seal; lighter body (≈6.3 g/ear) reduces fatigue during long playlists.
- 0.78 mm 2-pin sockets → easy cable swaps or BT adapters.
Specifications
| Item | Details |
|---|---|
| Model | BQEYZ WINTER II |
| Driver Units | 12 mm custom dual-cavity dynamic + PZT piezoelectric bone-conduction |
| Impedance | 40 Ω |
| Sensitivity | 113 dB |
| Frequency Response | 5–40 kHz |
| Cable | 4-core single-crystal copper, Litz T2, hand-woven |
| Cable Length | 1.2 m |
| Connector | 0.78 mm 2-Pin |
| Plugs | 3.5 mm SE, 4.4 mm balanced, Type-C (optional) |
| Shell | 5-axis CNC aluminum, anodized |
| Weight | ≈6.3 g per ear |
What’s in the Box
- WINTER II earphones × 1 set
- Upgraded single-crystal copper cable × 1
- 3.5 mm SE plug / 4.4 mm BAL plug / (Type-C optional)
- Carrying case × 1
- Cleaning brush × 1
- Silicone ear tips (S/M/L) × 9 pairs
- Ear-tips holder × 1
- Documentation
