HD154-40L-C

Ultra-Large Magnetic Circuit with N52 Magnetism!

Powerful Large Magnet Structure

Unleashes N52 Magnetic Flux

Delivers an Exceptional 123dB Sensitivity

Engineered with a high-strength SPCC frame, an outer-wound diaphragm architecture, and a oversized magnetic circuit driven by premium N52 magnets, this driver unit delivers high-excursion performance and powerful sound pressure levels (SPL).

The diaphragm combines a high-quality PU base with an aluminum-coated layer. The natural surface tension during oscillation ensures a balanced response across low and fundamental frequencies with ultra-low distortion. It reproduces deep, well-controlled, and impactful bass alongside crisp, non-fatiguing highs, backed by a wide dynamic range and expansive frequency response.

With its refined treble presentation and spacious soundstage, this driver excels at micro-detail retrieval, offering outstanding musical expression and resolution—making it a widely favored choice for premium OWS (Open-Wearable-Stereo) headphones.