Westone MACH 40 Professional In-Ear Musician's Monitor

2 Years Local Warranty.



Balanced and smooth is the best way to describe MACH 40’s soundstage, perfect for anyone seeking an extremely even listening experience. The MACH 40 features a proprietary four-driver system with dual lows, single mid, and single high and a 3-way passive crossover.



  • 3-way Passive Crossover
  • DRIVERS: Four Balanced-Armature Drivers
  • FREQ RESPONSE: 10Hz – 20kHz
  • SENSITIVITY: 100dB @1kHz
  • IMPEDANCE: 30 Ohms @1kHz



An ergonomic design allows all day use, with no ear fatigue.


The SuperBaX was developed to meet the needs of audiophiles in their constant pursuit of the perfect audio setup. With low 0.75 Ohms resistance, the SuperBaX offers pure sound reproduction with a light cable.


Protect your MACH 40 from the elements in a crushproof, watertight and dustproof Case from Pelican™. Also includes five pairs each of Westone Audio proprietary foam and silicone tips to ensure the perfect seal with maximum comfort.


The MACH 40 sports dual bass drivers with a single mid and treble driver with a 3-way crossover. The overall tonality is natural and balanced projecting a more reference level presentation. The dual bass drivers produce a warm and organic bass with superb responsiveness that elevate more mid-bass punch. Mids & vocals are clearly expressed and clean along with the treble.

The MACH 40 showcases the most reference and natural sound signature of all models that come before it with an intimate soundstage in both width and depth. As such, the MACH 40 is best for singers and acoustic instruments and music lovers looking for more clarity in their music without too much warmth in the bass.



Mach 40 Universal fit in-ear Monitors

Linum SuperBaX™ T2 Cable

5 Pair Foam + 5 Pair Silicone Tips

Impact Resistant Pelican™ Case

Westone Audio Cloth Bag


The Westone Audio MACH Series™ combines 35+ years of engineering and performance excellence to deliver sound quality the way it was intended to be heard. Every aspect of the MACH Series™ from the molded housings to the metal faceplates and carefully engineered drivers have been chosen with careful consideration to achieve harmony and balance. The result is an extremely lightweight and comfortable earpiece that can be enjoyed for hours on end, whether that be on stage, on the go, or simply listening at home. The Mach series sets a new benchmark for superior ergonomics and premium sound on and off the stage.

Experience music your way; the Westone Audio way and celebrate the artist in you.

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