CMF Buds 2a Review: Solid ANC Earbuds on a Budget

Quick Verdict

The CMF Buds 2a punches well above its weight in the budget ANC category. At under $60, you get 42dB hybrid noise cancelling, a comfortable fit that stays put, and a battery life that genuinely impressed me over two weeks of daily use. Call quality is clear enough for telehealth appointments and hands-free driving directions alike. The Nothing X app customization is a nice bonus if you like tweaking your EQ. Skip these if you need studio-monitor accuracy — but for everyday listening, commuting, and podcast sessions, the CMF Buds 2a earns a solid 8.2/10.

What Is the CMF Buds 2a?

The CMF Buds 2a are the budget sibling in Nothing's audio lineup — a sub-brand that trades flagship polish for genuine value. The dark grey finish looks understated and modern, and the pill-shaped charging case slides into pockets without protest. At first glance, nothing about the design screams "budget," which already puts these ahead of most competitors in this price bracket.

Under the hood, you get 12.4mm bio-fiber drivers tuned (partially) by Dirac, Bluetooth 5.4 with multipoint pairing, and a quad-microphone array designed to keep your voice crisp even when background noise creeps in. The 42dB hybrid ANC won't rival Sony or Bose, but it's effective enough for daily commutes and noisy office spaces. The Nothing X app unlocks custom EQ profiles, ANC level adjustment, and a low-latency gaming mode — features you'd typically find on earbuds costing twice as much.

Key Features

• 42dB Hybrid ANC — effective for commutes, cafés, and open-plan offices
• 12.4mm Bio-fiber Drivers — warm sound signature with punchy bass
• Quad Mic Array with Clear Voice Tech — clear calls with wind noise reduction
• 8-hour battery (earbuds) + 35.5-hour total — with quick charge (5 min → 2 hrs)
• Bluetooth 5.4 + Multipoint — connect two devices simultaneously
• IP54 Dust & Splash Resistance — workout-friendly and rain-safe
• Nothing X App — custom EQ, ANC levels, find earbuds, gaming mode

Hands-On Review

I unboxed the CMF Buds 2a on a Tuesday morning — the packaging was refreshingly minimal, and within thirty seconds of opening the lid, Google Fast Pair had already detected them. That kind of frictionless setup matters, especially if you're not someone who spends evenings reading Bluetooth manuals. The medium ear tips sealed well out of the box; I swapped to the large pair on day three and the isolation improved noticeably.

ANC was my first real test. I wore them on a packed subway ride — roughly 25 minutes with the noise cancelling at full strength. The rumble of the train dropped to a manageable hum, and a podcast at 60% volume was perfectly audible without cranking it. What surprised me was the transparency mode — it's usable, though voices on the other end sound slightly processed, like a walkie-talkie at low volume. For quick conversations at the coffee counter, it gets the job done.

Sound quality out of the box skews toward the warm side, which I personally enjoy for acoustic tracks and vocal podcasts. Rock and electronic fare well, though hip-hop and bass-heavy genres can push into boom territory at default settings. I spent about ten minutes in the Nothing X app dialing back the low-end and boosting the mids — after that, everything clicked into place. Will everyone bother doing this? Probably not. But it's there if you want it, and the app is straightforward enough that it doesn't feel like homework.

Call quality was the real wildcard for me. I've used budget earbuds before where the person on the other end sounded like they were calling from a wind tunnel. The CMF Buds 2a's quad mic setup handled two outdoor phone calls without complaint, and the wind noise reduction kicked in during a breezy afternoon walk without me noticing — which is exactly how it should work. The other party reported my voice as clear and natural, not compressed or tinny.

By the end of the first week, I'd only charged the case twice. That's with roughly 2-3 hours of daily use — podcasts in the morning, a phone call or two, and music during a grocery run. The quick-charge feature genuinely saved me once: I plugged them in while making lunch, and by the time I was heading out the door twenty minutes later, I had enough battery for a two-hour walk. No anxiety, no compromise.

Who Should Buy It?

These are a strong fit if you're after reliable everyday earbuds without dropping $100 or more. The CMF Buds 2a works well for:

• Telehealth and remote work — clear microphones and stable Bluetooth make these practical for video calls and doctor's appointments
• Commuters and transit riders — solid ANC at a price that won't sting if you misplace them
• Podcast and audiobook listeners — comfortable enough for extended wear, and the warm sound signature suits spoken word
• Budget-conscious buyers — you get multipoint pairing, app customization, and quick charge without the flagship price tag

Skip these if you prioritize audiophile-grade sound accuracy, need wireless charging, or want the absolute best transparency mode on the market. At this price, you're making sensible compromises — and the CMF Buds 2a makes the right ones.

Alternatives Worth Considering

• Nothing Ear (a) — Nothing's own step-up model with slightly better ANC and a more refined design. Worth the premium if you want the full Nothing ecosystem experience.
• Anker Soundcore Liberty 4 NC — Comparable ANC performance and battery life, with a longer track record in the budget-to-midrange earbud space.
• Samsung Galaxy Buds FE — If you're in the Samsung ecosystem, these offer seamless device switching and solid call quality, though ANC is in a similar ballpark.

FAQ

Final Verdict

The CMF Buds 2a is the kind of product that makes you question why you'd spend more. ANC isn't class-leading, but it's effective. Sound quality is warm and enjoyable after a quick EQ tweak. Battery life is genuinely generous. Call quality holds up in real-world conditions. For everyday use — commuting, calls, podcasts, light workouts — these earbuds deliver everything most people actually need without the premium tax.

If you're on a budget and want earbuds that don't feel like a compromise, the CMF Buds 2a deserves a spot on your shortlist.