Boult Audio K40 vs Boult Audio Z40 Ultra

Are you tired of those outdated wired earphones that keep getting tangled in your pocket? Ready to upgrade your audio experience without emptying your wallet? Boult Audio has two tempting options—the budget-friendly K40 and the feature-packed Z40 Ultra. But which one is truly right for you? Let’s break it down.


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The Boult Audio K40 and Z40 Ultra are two remarkable earbuds, each offering unique features.

The K40 earbuds are designed for comfort, featuring a sleek and ergonomic design that is perfect for extended listening sessions. They are equipped with 13mm bass drivers that utilize BoomX technology, delivering powerful bass and clear treble.

They offer a total battery life of 48 hours. The K40 earbuds are IPX5 water-resistant and support SBC and AAC codecs, operating on Bluetooth version 5.3. They offer excellent value for money.

On the other hand, the Z40 Ultra earbuds are equipped with 10mm drivers that also feature BoomX Technology, ensuring high-quality bass output. They offer up to 32dB Active Noise Cancellation (ANC) and utilize Quad-mic ENC technology, providing superior noise cancellation.

The Z40 Ultra earbuds offer a remarkable playback time of up to 100 hours, significantly longer than the K40. They are also IPX5 water-resistant and support Bluetooth version 5.3.

In summary, both earbuds offer similar features such as water resistance, BoomX technology, and Bluetooth 5.3 connectivity. However, the Z40 Ultra offers higher noise cancellation and longer battery life, while the K40 is more affordable.

The K40 also has larger drivers (13mm compared to 10mm in the Z40 Ultra), which might result in better sound quality. Both earbuds are excellent choices, offering a balance of quality, performance, and price.

Compare Prices of Boult Audio K40 and Boult Audio Z40 Ultra

Rs. 1,630 Rs. 2,999
April 12, 2024 10:34 am
× Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com (Amazon.in, Amazon.co.uk, Amazon.de, etc) at the time of purchase will apply to the purchase of this product.
1 new from Rs. 1,630
Rs. 1,999 Rs. 4,999
April 12, 2024 10:34 am
× Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com (Amazon.in, Amazon.co.uk, Amazon.de, etc) at the time of purchase will apply to the purchase of this product.
1 new from Rs. 1,999

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