SKU: 3587965256

Westone MACH 40 Professional Quad-Driver In-Ear Monitors

Sale price$348.75 Regular price$387.50
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Description

Westone MACH 40 Professional Quad-Driver In-Ear MonitorsSingers, musicians, and music lovers will love the Westone MACH 40, a pair of quad driver universal fit in ear monitors that feature warm balanced lows, mids, and highs with a 3 way passive crossover that provides clarity and responsiveness for any kind of music. The monitors are well suited for onstage monitoring, vocalists, guitar players, keyboard players, drummers, and sound engineers, as well as critical listening and general enjoyment. The

Singers, musicians, and music lovers will love the Westone MACH 40, a pair of quad-driver universal-fit in-ear monitors that feature warm balanced lows, mids, and highs with a 3-way passive crossover that provides clarity and responsiveness for any kind of music. The monitors are well suited for onstage monitoring, vocalists, guitar players, keyboard players, drummers, and sound engineers, as well as critical listening and general enjoyment.

The earphones employ Westone’s proprietary quad-driver system, utilizing two low frequency drivers, a mid driver, and a high frequency driver, which combine to deliver a frequency response of 10 Hz to 20 kHz at a sensitivity of 100 dB SPL. The MACH 40 features a Linum Estron SuperBaX cable with a low 0.75 ohms of resistance, to meet the needs of audiophiles in the constant pursuit of the perfect audio setup. The SuperBaX conveys music with precision and grace, while the lightweight cable disappears on your ear, allowing you to focus on what matters most. Included with these earphones are five pairs of silicone eartips of various sizes, five pairs of foam eartips (also in various sizes), an audio cloth bag, and an impact-resistant Pelican Case.

Westone Technology
An ergonomic design allows all day use, with no ear fatigue.
Linum SuperBaX Cable
BaX is a true high-end reference cable consisting of very thin and ultrastrong silver-plated copper cable. BaX conveys music with precision and grace, while the lightweight cable disappears on your ear, allowing you to focus on what matters most.

 

Premium Accessories
  • Protect your MACH 40 from the elements with the custom-designed impact-resistant Pelican case. Also included are five pairs each of Westone Audio proprietary foam and silicone tips to ensure the perfect seal with maximum comfort.
  • 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 ispurposely designed for both superior comfort and sound on and off the stage.

Westone Mach 40 Specs

Headphone
Earpiece Design In-Ear (Intra-Aural), Closed-Back
Earpiece Connection / Wearing Style Wired
Driver Type Balanced Armature
Number of Drivers 4, per Earpiece
Impedance 30 Ohms
Active Noise Cancellation No
Performance
Frequency Response 10 Hz to 20 kHz
Sensitivity 100 dB at 1 kHz
Wired Connectivity
Audio Connector to Source 1 x 1/8" / 3.5 mm TRS Male Right-Angled
Connector Plating Silver
Adapter (Included) None
Cable Design Y-Type
Audio Connector to Earpiece Not Specified by Manufacturer
Cable Color Black
Physical
Color Gray
Packaging Info
Package Weight 1.395 lb
Box Dimensions (LxWxH) 8.9 x 6.6 x 2.9"
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3587965256

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4.1 ★★★★★
Based on 23 reviews
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Verified Purchase
Love Leigh Angel
Belleville, US
★★★★★ 5
BEST PILLOWS EVER!!!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I am very picky with my pillows because I have a bad neck and I can never seem to find a good pillow. But I tried this pillow because it had everything I was looking for and the price was great! You get two of them and they are absolutely awesome.! normally I would need to lay on two pillows to try and get comfortable but with these pillows I just lay on one and I wake up with no neck pain. They really have a nice cooling effect. They actually puff up immediately after opening them. All you have to do is just shake them up and the pillow just puffs straight up.. It comes with extra cushioning if you want it to make it firmer and if you don’t want it as firm as it is, you can actually take some out. It really is such a beautiful pillow. It’s perfect in every way to me being such a picky pillow person. You just lay your head down on it and it forms around your neck and your head and when you get up, it goes right back to its normal form. It doesn’t get flat and I love it. I completely recommend this to anyone who is a person who has a hard time finding a really good pillow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
E
Verified Purchase
$@[)E
New York, US
★★★★★ 5
Top of the line, best pillows Ive ever had
Color: White-cooling Basic, Size: Queen(Pack of 2)
These pillows are top of the line! I bought them in 2024 and they are still fluffy. When they lose a little fluff, you just punch em around a little bit and voila, like new again. They have kept their shape cery well and do great for cooling. I haven't had to add more filling yet either. I just laid my head on one and thought, I need to do a review cause everytime i lay on these pillows its like clouds. My head is heavy and this is relief :-D
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Reviewed in the United States on May 21, 2026
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Verified Purchase
Chelsea H.
Port Orchard, US
★★★★★ 3
Weird smell
Color: White-cooling Basic, Size: Queen(Pack of 2)
The pillows are great for someone looking for something cool and comfortable. We loved them so much that we bought a second pair. However, we were seriously disappointed with the odor of our last purchase. They give off a strong and indescribable chemical/burning plastic smell so nauseating that it’s difficult to sleep with. We’re hoping this issue will resolve with a couple more washes of the pillow cases, but am worried the source is the stuffing itself.
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Reviewed in the United States on May 28, 2026
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Verified Purchase
Ken Hill
Grantham, US
★★★★★ 5
helped treat my sore neck
Color: White-cooling Basic, Size: Camping Pillow(Pack of 1)
This pillow — after dialing in the right amount of shredded foam — has greatly helped my sore neck. Initially, I had to remove some foam. Then I gradually added foam until it reached optimum comfort and support. It is also CPAP-friendly — especially when I position my head near the pillow's edge. (I am a left-side sleeper.) I like the travel size because I use a bulky hugging pillow to ease stress on my shoulder and elbow. That makes my side of the bed feel cramped if using a larger head pillow. A smaller pillow is easy to flip end-to-end in the middle of the night. I have spent lots of money on pillows over the years, but this is the best I've ever had for relieving [1] neck pain and [2] CPAP mask seal problems. Very comfortable, supportive, and affordable. I did not notice any unpleasant smell — and I am usually sensitive to that kind of thing. Would highly recommend.
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Reviewed in the United States on May 7, 2026
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Verified Purchase
Molly Farrell
Draper, US
★★★★★ 5
Love them!
Color: White-cooling Basic, Size: Queen(Pack of 2)
Love them! After 10 years with our MyPillows, they finally lost their fluff. The reviews I read of the MyPillows of today were not good; they didn’t have as much filling as they used to. These pillows remind me of how fluffy our new MyPillows were 10 years ago!! You sink right into them and can mush them however and they stay. These are way cheaper than the Coop and it’s the same concept; add or remove the filling as needed. The cooling side is a huge plus too! You won’t be disappointed with these pillows!
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Reviewed in the United States on May 22, 2026

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