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You expect a certain level of performance from active noise-canceling earbuds (ANC) or headphones, even if they're priced "budget." If you're looking for a great pair of ANC earbuds at a price that won't make you cry when you lose them, consider the Anker Space A40 , currently on sale for $49 after 51% off (originally $99.99), which I've confirmed is The lowest price they got after looking at the price checker tool.
Anker Soundcore Space A40The Anker Space A40's Soundcore gives you as many features as some high-end headphones, and even better ANC, all at an affordable price. I've had these headphones for a few months now, and I can compare the ANC performance to some high-end earbuds I've tried. For the price, the ANC is surprisingly good and comparable to earbuds costing over $200. Earbuds have microphones that pick up the sounds around you, adjusting the ANC accordingly. If you want a more in-depth look at its features, you can read PCMag's full review here.
Another impressive quality of these earbuds is their long battery life, which offers 10 hours of playtime, with the charging case providing an additional 50 hours of playtime. The Soundcore app lets you customize the EQ controls to your liking, but the default audio settings out of the box are great, so there's no need to tweak it unless you want to. The earbuds fit well and don't fall off easily, which is a must for ANC. It has an IPX4 waterproof rating.
If you're an Apple user, the main downside of these earbuds is the audio, as it relies on the AAC codec. But for the price, the Anker Space A40 otherwise excel and are my favorite ANC earbuds under $100.