CMF Buds Pro 2 Review – Dual Drivers, 50dB ANC, LDAC & Smart Dial
CMF Buds Pro 2 • True Wireless Earbuds Review

CMF Buds Pro 2 Review: Dual Drivers, 50dB ANC & Smart Dial

The CMF Buds Pro 2 combine a dual-driver audio system, 50dB Hybrid ANC, LDAC support, Dirac Opteo tuning, Spatial Audio Effect and a distinctive Smart Dial charging case. Here is a detailed look at the sound, noise cancellation, battery, calls, connectivity and everyday features.

CMF Buds Pro 2 wireless earbuds

CMF Buds Pro 2

11mm Bass Driver + 6mm Micro-Planar Tweeter • 50dB Hybrid ANC • LDAC

Drivers 11mm + 6mm Dual Drivers
ANC Up to 50dB Hybrid ANC
Battery Up to 43 Hours with Case
Bluetooth Bluetooth 5.4
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CMF Buds Pro 2: Quick Specifications

Driver System
11mm + 6mm Dual Drivers
ANC
Up to 50dB Hybrid ANC
Codec
LDAC, AAC, SBC
Bluetooth
Bluetooth 5.4
Battery
60mAh Each Bud
Case Battery
460mAh
Earbud Playback
Up to 11 Hours
Case Playback
Up to 43 Hours

CMF Buds Pro 2 Overview

CMF Buds Pro 2 are designed around a two-driver acoustic system rather than a conventional single-driver setup. Each earbud combines an 11mm bass driver with a 6mm micro-planar tweeter.

The earbuds also bring Hybrid Active Noise Cancellation rated up to 50dB, Transparency Mode, LDAC, Dirac Opteo tuning, Ultra Bass Technology 2.0 and Spatial Audio Effect.

Main highlight: The combination of dual drivers + LDAC + Dirac Opteo + 50dB Hybrid ANC gives the Buds Pro 2 a feature set aimed at listeners who want more control over both sound and noise cancellation.

Sound Quality & Dual Drivers

The CMF Buds Pro 2 use separate drivers for bass and higher frequencies. The 11mm bass driver is paired with a 6mm micro-planar tweeter, creating a dual-driver architecture designed to handle different portions of the frequency range.

11mm Bass Driver

  • 11mm bass driver
  • PU + PET titanium-coated diaphragm
  • Designed for lower-frequency reproduction
  • Works with Ultra Bass Technology 2.0

6mm Micro-Planar Tweeter

  • 6mm micro-planar tweeter
  • PET + titanium-coated PET diaphragm
  • Designed for high-frequency reproduction
  • Supports the extended audio-frequency range
Audio frequency range: Nothing lists a 20Hz–40kHz audio frequency range for the Buds Pro 2, compared with 20Hz–20kHz for the previous Buds Pro.

Dirac Opteo & Custom EQ

Dirac Opteo is used to tune and optimize the sound presentation. The Nothing X app also provides multiple EQ presets and a Custom option.

Preset 1
Dirac Opteo
Preset 2
Pop
Preset 3
Rock
Preset 4
Classical
Preset 5
Electronic
Preset 6
Enhance Vocals
Custom
User Adjustable EQ
App
Nothing X
Nothing states that Dirac Opteo and High-Quality Audio cannot be enabled simultaneously because of sampling-rate limitations.

Ultra Bass Technology 2.0

Ultra Bass Technology 2.0 dynamically enhances low frequencies and offers five adjustable levels through the Nothing X app.

For bass lovers: The five adjustable bass levels allow listeners to change the amount of low-frequency enhancement rather than being locked to a single bass profile.

50dB Hybrid Active Noise Cancellation

CMF Buds Pro 2 feature Hybrid Active Noise Cancellation with a stated maximum noise-cancellation depth of up to 50dB and a frequency range extending up to 5000Hz.

ANC Type
Hybrid ANC
Maximum Depth
Up to 50dB
Frequency Range
Up to 5000Hz
Transparency
Supported
Important: 50dB is the theoretical maximum claimed from Nothing's laboratory testing. Actual noise cancellation varies according to the environment, fit and other usage conditions.

Smart & Adaptive ANC

The Buds Pro 2 include Smart ANC technology designed to detect leakage between the earbud and ear canal and compensate accordingly.

Adaptive ANC can be enabled through the Nothing X app, allowing the earbuds to adjust noise cancellation based on the surrounding environment.

Smart ANC Adaptive ANC Transparency Mode 50dB ANC

Spatial Audio Effect

CMF Buds Pro 2 support Spatial Audio Effect based on a Head-Related Transfer Function (HRTF) algorithm.

What it is designed to do: The HRTF-based processing creates a more surround-like presentation intended to make compatible music, movies and games feel more immersive.

Nothing describes the feature as a 360-degree cinematic sound experience.

LDAC & Hi-Res Wireless Audio

The CMF Buds Pro 2 support LDAC and are certified for Hi-Res Audio Wireless. Nothing specifies transmission of up to 990kbps, 24-bit and 96kHz under supported conditions.

Supported Codecs

  • LDAC
  • AAC
  • SBC

Hi-Res Details

  • Hi-Res Audio Wireless certification
  • Up to 990kbps LDAC transmission
  • 24-bit / 96kHz support under compatible conditions
  • Bluetooth 5.4
Actual high-quality wireless playback depends on the connected phone, codec configuration, source material and other compatibility conditions.

Call Quality & 6 Microphones

There are six high-definition microphones in total, with three microphones in each earbud. Nothing uses Clear Voice Technology 2.0 to reduce unwanted ambient noise during calls.

Microphone System

  • 3 microphones per earbud
  • 6 HD microphones total
  • Clear Voice Technology 2.0
  • Environmental noise reduction

Wind Noise Reduction

  • Wind-Flow structure
  • Designed to reduce direct wind contact
  • Noise-reduction algorithms
  • Designed for clearer outdoor calls

Smart Dial Charging Case

One of the most distinctive features is the customizable Smart Dial on the charging case. The dial can be configured through the Nothing X app.

Smart Dial controls: Rotate the dial to control volume and use presses or press combinations for functions such as playback, ANC, voice assistant, calls and Low Lag Mode.
Rotate
Volume Control
Single Press
Custom Function
Double Press
Custom Function
Long Press
Custom Function

Gaming & Low-Lag Mode

The Nothing X app provides a Low Lag Mode intended to reduce audio delay during gaming. The Smart Dial can also be configured to activate Low Lag Mode.

Gaming feature: Low Lag Mode is useful when synchronization between on-screen action and audio is important. Actual latency can vary by device, game and connection conditions.

Battery Life & Fast Charging

Each earbud has a 60mAh battery, while the charging case has a 460mAh battery. Under Nothing's stated AAC test conditions, playback can reach up to 11 hours from the earbuds alone and up to 43 hours with the case when ANC is turned off.

Earbud Battery
60mAh Each
Case Battery
460mAh
ANC Off
Up to 11h / 43h Total
ANC On
Up to 6.5h / 26h Total

AAC Battery Figures

  • ANC off: up to 11 hours earbuds
  • ANC off: up to 43 hours with case
  • ANC on / Transparency: up to 6.5 hours earbuds
  • ANC on / Transparency: up to 26 hours with case

LDAC Battery Figures

  • ANC off: up to 6.5 hours earbuds
  • ANC off: up to 25 hours with case
  • ANC on / Transparency: up to 4.3 hours earbuds
  • ANC on / Transparency: up to 16.6 hours with case
Fast charging: Nothing states that a 10-minute charge can provide up to 6.5 hours of music playback with the case under specified ANC-off AAC laboratory conditions.
Actual battery life depends on volume, codec, ANC mode, calls, environmental interference, connected device and other usage factors.

Bluetooth 5.4 & Dual Connection

The CMF Buds Pro 2 use Bluetooth 5.4 and support Dual Connection, allowing the earbuds to remain connected to compatible devices and switch between them.

Bluetooth
Bluetooth 5.4
Range
Up to 10m
Dual Connection
Supported
App
Nothing X

Nothing X App

The Nothing X app is an important part of the Buds Pro 2 experience. It provides access to sound customization, ANC settings, Smart Dial controls, gaming mode and other features.

Custom EQ Dirac Opteo ANC Controls Smart Dial Low Lag Mode Personalised Controls Sound Presets

ChatGPT Integration

Nothing lists ChatGPT integration as a feature of the Buds Pro 2. On compatible Nothing and CMF phones, the earbuds can be used to call up ChatGPT.

Compatibility note: ChatGPT integration depends on compatible CMF/Nothing phones and the relevant software ecosystem. It should not be assumed to be available in exactly the same way on every smartphone.

IP55 Water & Dust Resistance

The earbuds have an IP55 water and dust resistance rating. This provides protection against dust ingress and water jets under the conditions covered by the rating.

Important: IP55 protection does not mean the earbuds are waterproof or suitable for submersion. Avoid deliberately exposing them to water beyond their rating.

Design, Weight & Materials

CMF Buds Pro 2 use plastic earbud housings with silicone ear tips. The charging case has a rubber-paint exterior, while the hinges and metal knobs use stainless steel.

Earbud Size
33.1 × 20.2 × 23.8mm
Case Size
53.4 × 53.4 × 23mm
Earbud Weight
4.9g Each
Case Weight
46g

CMF Buds Pro 2 Full Specifications

Specification CMF Buds Pro 2
Product Type True Wireless Stereo Earbuds
Driver Configuration 11mm Bass Driver + 6mm Micro-Planar Tweeter
Diaphragm PU + PET titanium-coated bass diaphragm; PET + titanium-coated PET tweeter diaphragm
Audio Frequency Range 20Hz – 40kHz
Audio Codec LDAC, AAC, SBC
Hi-Res Audio Hi-Res Audio Wireless certified
LDAC Up to 990kbps / 24-bit / 96kHz under supported conditions
ANC Hybrid ANC up to 50dB
ANC Frequency Range Up to 5000Hz
Transparency Mode Supported
Microphones 6 HD microphones, 3 per earbud
Call Technology Clear Voice Technology 2.0
Spatial Audio HRTF-based Spatial Audio Effect
EQ Dirac Opteo, Pop, Rock, Classical, Electronic, Enhance Vocals + Custom
Ultra Bass Ultra Bass Technology 2.0 with 5 adjustable levels
Bluetooth Bluetooth 5.4
Connection Range Up to 10m
Dual Connection Supported
Earbud Battery 60mAh each
Case Battery 460mAh
Playback ANC Off Up to 11h earbuds / 43h with case using AAC
Playback ANC On Up to 6.5h earbuds / 26h with case using AAC
Playback LDAC ANC Off Up to 6.5h earbuds / 25h with case
Playback LDAC ANC On Up to 4.3h earbuds / 16.6h with case
Fast Charging Up to 6.5h playback after 10 minutes under specified conditions
Charging USB Type-C
Earbud Dimensions 33.1 × 20.2 × 23.8mm
Case Dimensions 53.4 × 53.4 × 23mm
Earbud Weight 4.9g each
Case Weight 46g
Water/Dust Resistance IP55 earbuds
App Nothing X

CMF Buds Pro 2 Pros & Things to Consider

Pros

  • 11mm + 6mm dual-driver setup
  • Up to 50dB Hybrid ANC
  • LDAC and Hi-Res Audio Wireless support
  • Dirac Opteo tuning
  • Spatial Audio Effect
  • Custom EQ through Nothing X
  • Smart Dial charging case
  • Six HD microphones
  • Bluetooth 5.4 and Dual Connection
  • Up to 43 hours with case under specified AAC conditions
  • IP55 earbuds

Things to Consider

  • Maximum 50dB ANC is a laboratory/theoretical figure.
  • LDAC can reduce total battery life compared with AAC.
  • Advanced audio features depend on compatible devices and settings.
  • IP55 does not mean the earbuds are waterproof or submersible.
  • Some Nothing X features require compatible software and devices.
  • Dirac Opteo and High-Quality Audio cannot be enabled simultaneously.

Feature Assessment

The following visual indicators are editorial assessments of the published feature set rather than laboratory scores or hands-on test results.

Sound Features
ANC Features
Battery
Smart Features

These are visual editorial indicators based on specifications and features. They are not independent product ratings.

Who Should Consider the CMF Buds Pro 2?

🎵 Music Listeners

The dual-driver system, LDAC, Hi-Res certification, Dirac Opteo and custom EQ give listeners several ways to configure their sound.

✈️ Commuters

Hybrid ANC, Adaptive ANC and Transparency Mode are useful features for changing environments such as public transport and offices.

🎮 Gamers

Low Lag Mode and customizable controls make the Buds Pro 2 suitable for users who want dedicated gaming-oriented audio controls.

CMF Buds Pro 2 Verdict

The CMF Buds Pro 2 offer a feature-rich wireless audio package built around dual drivers, Hybrid ANC and high-resolution Bluetooth audio.

Their 11mm bass driver and 6mm micro-planar tweeter are complemented by Dirac Opteo, Ultra Bass Technology 2.0, LDAC, Spatial Audio Effect and customizable EQ settings.

The Smart Dial is another standout design element, providing physical controls for volume and other configurable functions without relying entirely on touch controls.

With six microphones, Bluetooth 5.4, Dual Connection, Low Lag Mode, IP55 protection and up to 43 hours of AAC playback with the case under specified conditions, the Buds Pro 2 cover a broad range of everyday listening scenarios.

CMF Buds Pro 2 FAQ

How many drivers do CMF Buds Pro 2 have?

Each earbud uses an 11mm bass driver and a 6mm micro-planar tweeter.

How much ANC do CMF Buds Pro 2 support?

They support Hybrid Active Noise Cancellation rated up to 50dB. This is a theoretical maximum based on Nothing's laboratory testing.

Do CMF Buds Pro 2 support LDAC?

Yes. They support LDAC along with AAC and SBC and carry Hi-Res Audio Wireless certification.

What is the battery life of CMF Buds Pro 2?

Under Nothing's stated AAC conditions, the earbuds can provide up to 11 hours with ANC off, while the total playback time with the charging case can reach up to 43 hours.

Do CMF Buds Pro 2 have Spatial Audio?

Yes. They support Spatial Audio Effect using an HRTF-based algorithm.

What is the Smart Dial?

The Smart Dial is a customizable control on the charging case. It can be configured through the Nothing X app for functions such as volume, ANC, playback, calls, voice assistant and Low Lag Mode.

Are CMF Buds Pro 2 waterproof?

The earbuds have an IP55 water and dust resistance rating. They should not be treated as waterproof or suitable for underwater use.

Which Bluetooth version do they use?

CMF Buds Pro 2 use Bluetooth 5.4 and support Dual Connection.

Do they work with the Nothing X app?

Yes. Nothing X provides sound customization, EQ, ANC controls, Smart Dial configuration, Low Lag Mode and other settings.

Check CMF Buds Pro 2 on Amazon

Check the latest price, offers, availability and customer reviews for the CMF Buds Pro 2.

View CMF Buds Pro 2 on Amazon
Review note: Specifications and feature descriptions are based primarily on Nothing's official CMF Buds Pro 2 product and support information. Battery figures, ANC performance and other usage results can vary depending on volume, codec, connected device, environment, software and usage conditions.

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