Westone W40 Quad Driver Premium In-Ear Monitor Headphones - 78504 w/ FiiO A5 Amp Bundle

The W40 earphone will take your listening experience to an entirely new level. Four balanced armature drivers (two low, one mid and one high) and a three-way crossover network deliver breathtaking clarity and realism. Recommended for personal audio and video devices.

Westone True-Fit Technology - 50+ years experience with in-ear applications has yielded a low-profile, lightweight, universal earpiece which delivers maximum comfort and in-ear coupling for dynamic transfer of sound.

Balanced Armature Driver - Westone's balanced armature drivers are significantly more compact and efficient than traditional dynamic drivers. By combining multiple balanced armature drivers with sophisticated crossover networks, Westone monitors provide enhanced sonic detail and frequency range that extends well beyond typical in-ear solutions.

EPIC Replaceable Cable - Westone's robust replaceable cable is constructed of bifurcated, high-flex, ultra-low resistance tensile wire, reinforced with a special aramid fiber, and braided for ultimate durability, acoustic transparency, and isolation from mechanical cable noise.

3-Button MFi Control System + Mic - Function control for Apple products including volume +/-, tracking +/-, phone answer, and Siri activation.

Designed & Assembled in the USA - Meticulously built by a staff of dedicated artisans and lab techs based in the USA, Westone's products exhibit a level of craftsmanship that truly embodies America's rich history of handmade artistry.

Product Specifications:

• Sensitivity: 118dB SPL @ 1mW
• Frequency Response: 10 Hz - 18 kHz
• Impedance: 31 ohms @ 1 kHz
• Passive Noise Attenuation: 25dB
• Driver: Four balanced armature drivers with three-way crossover
• Cable: MFi and EPIC Replaceable
• Warranty: 2 Years