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W40 Earphones


In stock


Westone Audio W40 Four-Driver WA Ergonomic Ear Tip Technology Earphones with Bluetooth Cable.



The four balanced-armature driver design of the W40 will take your listening to an entirely new level. The award-winning sound of the W40 features a beautifully-flat frequency response with articulate lows, precise mid-range, sparkling highs, and performance that is perfect for recorded and mastered music. The Westone Audio W40 is the ideal first earphone for those music lovers and critical listeners looking to get the absolute most from their listening experiences. Ideal for all personal audio and video devices.

  • Proprietary Ear Tip Technology: 60 years of experience designing products for the ear, has resulted in a universal-fit earpiece that is compact, low-profile, lightweight, and extremely comfortable. Our proprietary eartips enhance the performance of the W40 by ensuring a great fit and seal, right out of the box.
  • BALANCED-ARMATURE DRIVERS: Westone Audio’s proprietary balanced-armature drivers provide enhanced sonic detail and frequency range that extends well beyond other in-ear solutions.
  • WESTONE Audio BLUETOOTH CABLE: Full-resolution Bluetooth Cable uses aptX® technology to deliver extraordinary detail, clarity, and a dynamic soundstage that has to be heard to be appreciated. The Westone Audio Bluetooth Cable features; 8 hours of battery life, a 10 meter/ 32 foot range, has a water and dust resistant IPX-4 rating, and features our exclusive MMCX Audio® connectors, which allows the Bluetooth Cable to be used with any custom-fit or universal-fit earpiece
  • HIGH_DEFINITION SILVER MMCX® CABLE: Westone Audio’s High-Definition Silver MMCX® Cable features four strands of low-resistance, pure-silver plated copper alloy, braided around a center strengthening core. Low resistance silver-plated copper wire improves electrical conductivity, providing extraordinary clarity and detailed sound reproduction.
  • TECHNICAL SPECS: The Westone Audio W40 features a full-range, four balanced-armature driver with 118 dB SPL @ 1mW sensitivity, 10Hz - 18kHz frequency response, and an impedance of 31 ohms @ 1kHz, 25dB Passive Noise Attenuation
  • IN THE BOX + WARRANTY: Purchase includes: W40 Universal-Fit Earphones, High Definition Silver MMCX cable, Westone Audio Bluetooth Cable, 5 Pair Patented STAR™ Silicone Tips, 5 Pair Proprietary Ear Tip Technology Foam Tips, Exchangeable Metal Faceplates, Deluxe Zippered Carrying Case, 2 Year Limited Warranty.

See the Additional Information tab for documentation, downloads, and more information.

Review and Rating


I have owned these now for ~3 years and I am blown away each time I use them.
Especially when compared back2back with a pair of bluetooth google buds, these are next level clear. Lows are clear and punchy, mids are balanced, and highs are exactly where I want them.

I recommend these often to friends and family but, the ~$500 price tag is steep for most people. Recommended for anyone who cares about their music quality.

Frank Doghearty

I have owned these for three years and I am happy with them. The braided cable produces incomparably better sound quality, but I like the fact that I can use them with my cell.

Notice that these are already good enough to reproduce whatever your source is capable of, so instead of complaining about sound quality, try checking them out with applicable sound sources.

My only gripe comes from the fact that my previous piece was a UM-3 which, sadly, got stolen. However, the UM-3 still came with the zippered hard case that now is selling for $60, which is a joke for something that probably costs less than $5 to manufacture. The cheap plastic case these come with is available on eBay for less than $8, but even that is too much for it (here, they sell for about $20), because every time I put the device in the case, I am neurotic about damaging the cable, which zippers would not do. It's also time-consuming to put the unit away because of this. In this price range, skimping on the case is vulgarly unconscionable.