We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-07 · 7 min read · Independent comparison
If you want the earbuds that fight noise hardest and last longest through a workday, choose CMF BY NOTHING Buds 2; if you need the earbuds that lean hardest into pure bass punch, choose Monster Earbuds. Both are in-ear true wireless sets built for everyday listening, but they solve different problems. I'll break down which one makes more sense for your desk, your commute and your playlist.
• CMF BY NOTHING Buds 2 — biggest strength: 48dB hybrid active noise cancellation plus a huge 55-hour total playtime, tuned with Dirac Opteo and an 11mm driver for deep bass and clean vocals.
• CMF BY NOTHING Buds 2 — biggest trade-off: No wired option and no jack, so you're fully dependent on Bluetooth and the app for tuning.
• Monster Earbuds — biggest strength: Oversized 13mm drivers pushing boosted, powerful bass, with Bluetooth 6.0 and a lightweight pocket-friendly build.
• Monster Earbuds — biggest trade-off: It offers environmental noise cancellation for calls only, not full active noise cancellation, and shorter battery life.
• Who each is for: CMF BY NOTHING Buds 2 is for the office worker who wants quiet focus and marathon battery; Monster Earbuds is for the listener who prioritizes thumping bass and a compact carry.
The CMF BY NOTHING Buds 2 is built around control — control of noise, control of sound signature, control of your day. The headline is 48dB hybrid active noise cancellation covering a 5200Hz ultra-wide frequency range, and an Environmental Adaptive mode that adjusts reduction levels in real time as your surroundings change. In an open-plan office, that's the feature you'll notice most: it's designed to knock down the hum of conversation, HVAC and keyboards so you can actually concentrate.
On the audio side, the 11mm PMI driver delivers deep bass and clear treble, with Dirac Opteo tuning for vocal clarity and instrument separation. If you're the kind of listener who wants bass you can feel without the mids turning to mush, that combination is the point. There's also 360° cinematic spatial audio powered by an HRTF-based algorithm for movies and games, plus an Ultra Bass setting you can dial in through the Nothing X app alongside EQ and ANC adjustments.
Battery is where this one pulls away for office use. CMF lists up to 13.5 hours on a single charge and 55 hours total with the case, and a 10-minute top-up gets you 7.5 hours. A charge from empty takes about 62 minutes. Calls run through 6 HD mics with AI-powered Clear Voice Technology 3.0 and Wind Noise Reduction 3.0, so it works as a with-microphone wireless headset for office meetings and calls. IP55 water and dust resistance, Bluetooth 5.4 and touch controls round it out.
Who should buy it: anyone who wants one of the best in-ear earbuds for office use — long meetings, long focus blocks, long commutes — and who values ANC depth and battery endurance over everything else.
Who should skip it: if you want a wired fallback or you don't want to bother with an app to get the most out of your EQ, this isn't the simpler pick.
The Monster Earbuds take a different route to the same destination. Instead of engineering noise out of your environment, they engineer bass into your ears. The N-Lite 310 true wireless earbuds use oversized 13mm drivers — noticeably larger than the CMF's 11mm — specifically to deliver powerful sound with boosted bass. Monster calls it Pure Monster Sound, and the whole design brief reads as "make the low end hit."
That's the reason to pick these. If your library lives in hip-hop, EDM, rock or anything rhythm-forward, a bigger driver pushing boosted bass is exactly what you want, and the 20Hz–20,000Hz frequency range covers the full span. The ergonomic in-ear design nestles into your ear to minimize external noise, and three sizes of ear tips are included so you can match the shape of your ears for a secure fit that stays put during outdoor activity.
For work calls, there's environmental noise cancellation — not full ANC, but enough to reduce background noise so your voice comes through clearer on calls and online meetings. Monster explicitly frames this for remote work in busy cafés and offices, which tells you who it's aimed at. Battery runs up to 8 hours on a charge with 32 more in the case, and a 10-minute quick charge gets you up to 2 hours. Bluetooth 6.0 handles connectivity with a stable, low-latency link for video, gaming and calls, and IPX5 waterproofing covers sweat and light rain.
Who should buy it: bass-first listeners who want a compact, lightweight set that slips into a pocket and delivers punchy low end, with enough call clarity for meetings.
Who should skip it: if you work in a genuinely noisy space and need real active noise cancellation to function, the ENC here is a call-clarity feature, not a silence-the-world feature.
• Best for deep bass tuning depth → CMF BY NOTHING Buds 2, thanks to the 11mm driver plus Dirac Opteo and an app-adjustable Ultra Bass mode.
• Best for raw bass driver size → Monster Earbuds, with 13mm drivers built specifically for boosted low end.
• Best for battery life → CMF BY NOTHING Buds 2 — up to 13.5 hours per charge and 55 hours total, versus 8 and 32.
• Best for active noise cancellation → CMF BY NOTHING Buds 2, with 48dB hybrid ANC and adaptive mode; Monster offers ENC for calls only.
• Best for office meetings and calls → CMF BY NOTHING Buds 2, with 6 mics, Clear Voice Technology 3.0 and wind noise reduction.
• Best for a lightweight, pocketable carry → Monster Earbuds, with a compact case and an ergonomic fit backed by three ear tip sizes.
• Best for fast top-ups → CMF BY NOTHING Buds 2, where 10 minutes returns 7.5 hours versus 2 hours on the Monster.
• Best for bass on a tight focus → Monster Earbuds, if punchy low end matters to you more than silence and stamina.
I'd buy the CMF BY NOTHING Buds 2. For office use specifically, the 48dB hybrid ANC and the adaptive mode are the features that change your day — they're what let you disappear into work in a loud room. Add 55 hours of total playtime and a 6-mic call setup, and it covers the full workday and then some. The Monster Earbuds are the more fun listen for bass-heavy music, and I'd happily recommend them to someone who wants punch above all else. But if you're buying one set for work and everything else, I'd go CMF.
what are headphones with good bass
Good bass in headphones usually comes down to driver size and tuning. The Monster Earbuds use 13mm drivers explicitly designed for boosted bass, while the CMF BY NOTHING Buds 2 use an 11mm driver with Dirac Opteo tuning plus an Ultra Bass setting in the Nothing X app. Both qualify; Monster leans harder into raw low-end, CMF balances bass with vocal clarity.
what headphones have deep bass
Deep bass means the driver can reproduce low frequencies cleanly. Both sets here cover a 20Hz low end — the floor of human hearing — but they get there differently. The CMF BY NOTHING Buds 2 pair an 11mm driver with Dirac Opteo and app-based EQ for controlled, adjustable depth; the Monster Earbuds rely on oversized 13mm drivers for a boosted, powerful low end out of the box.
what is bass in headphones
Bass is the low-frequency part of the audio range, roughly the bottom end of the 20Hz–20,000Hz span both of these earbuds cover. It's the thump in a kick drum and the rumble in a bassline. How much you hear depends on driver size, tuning and fit — which is why Monster includes three ear tip sizes and CMF offers EQ and Ultra Bass controls.
what are earbuds with good bass
Earbuds with good bass combine a capable driver with a secure in-ear seal. The Monster Earbuds focus on this directly with 13mm drivers and an ergonomic in-ear fit. The CMF BY NOTHING Buds 2 take a more flexible approach: an 11mm PMI driver for deep bass and clear treble, plus Dirac Opteo tuning and app controls so you can push the low end to taste.
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