QIGOM ED9 40 mm Headphone Driver Unit, 32 Ohm 111 dB, Toray PET Transparent Diaphragm, CCAW Voice Coil, U‑Cup 4‑Hole Venting, DIY Audio Speaker Unit, 1 Pair

Key features

• 40 mm Driver Unit: Features a 40 mm headphone driver designed for DIY audio builds, delivering precise and detailed sound reproduction.
• High Sensitivity & Impedance: Rated at 32 Ohm impedance and 111 dB sensitivity for efficient, powerful audio output.
• Toray PET Transparent Diaphragm: Utilizes a high-quality Toray PET diaphragm for accurate frequency response and minimal distortion.
• CCAW Voice Coil & U-Cup 4-Hole Venting: Lightweight CCAW voice coil enhances transient response, while U-Cup 4-hole venting optimizes airflow and acoustics.
• DIY Audio Upgrade: Sold as a pair, these driver units are ideal for custom headphone builds, repairs, or audio experimentation projects.