JBL Live 670NC Review – Wireless On‑Ear Headphones with True Adaptive ANC, 65‑Hour Battery, and JBL Signature Sound

Table of Contents

1. Introduction

2. Key Specifications at a Glance

3. Design and Build – Lightweight On‑Ear, Foldable, and Comfortable

4. Battery Life – 65 Hours with ANC Off, 50 Hours with ANC On

5. Audio Performance – 40mm Drivers with JBL Signature Sound and Spatial Audio

6. True Adaptive Noise Cancellation and Smart Ambient Modes

7. Personi‑Fi 2.0 and JBL Headphones App Customization

8. Connectivity – Bluetooth 5.3, Multipoint, and Voice Assistants

9. Smart Features – Auto Play/Pause and Hands‑Free Control

10. What’s in the Box

11. Pros and Cons

12. Frequently Asked Questions (FAQ)

13. Conclusion – Is the JBL Live 670NC Worth It?

1. Introduction

The JBL Live 670NC is a pair of wireless on‑ear headphones released in early 2024, designed to provide a premium mid‑range audio experience with a focus on battery longevity and smart features. These headphones are characterised by JBL’s signature bass‑heavy sound and True Adaptive noise‑cancelling technology. Powered by 40mm dynamic drivers, they deliver JBL Signature Sound – notably bass‑forward but fully customizable via the JBL Headphones App. Spatial Sound creates virtual surround sound from any stereo content, enhancing movies and games. Battery life is exceptional: up to 65 hours with ANC off and 50 hours with ANC on, with a 5‑minute fast charge providing 4 hours of playback. True Adaptive Noise Cancelling uses four noise‑sensing microphones to adjust to your environment in real time, though reviewers note it is less effective at blocking speech or high‑pitched office noise compared to over‑ear models. Smart Ambient and TalkThru modes let you stay aware of your surroundings or have a conversation without removing the headphones. The lightweight (219g) on‑ear design features a textured fabric headband and soft ear cushions, and it is foldable for portability. Personi‑Fi 2.0 in the JBL Headphones app runs a hearing test to create a custom audio profile tailored to your hearing.

For Android users, the JBL Live 670NC integrates seamlessly with the Android ecosystem via Google Fast Pair and the companion app.

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2. Key Specifications at a Glance

3. Design and Build – Lightweight On‑Ear, Foldable, and Comfortable

The JBL Live 670NC features an on‑ear design with a textured fabric headband and soft leatherette ear cushions. At just 219g, they are lightweight enough for extended wear, though the on‑ear design can cause ear fatigue or heat build‑up over long sessions (a common trait of on‑ear headphones). The clamping force is moderate – secure without excessive pressure. The ear cushions are soft and the headband is adjustable.

The foldable design is a highlight: the ear cups swivel flat and fold inward, reducing the size for easy storage in a backpack or laptop bag. A soft pouch is not included, but the compact form makes packing simple. The build combines matte plastic with fabric accents, available in several colours. Physical buttons on the right ear cup control power, volume, playback, ANC/ambient modes, and voice assistants. The USB‑C port for charging is located on the bottom edge. A 3.5mm jack is not present; these headphones are strictly wireless.

4. Battery Life – 65 Hours with ANC Off, 50 Hours with ANC On

The JBL Live 670NC offers exceptional battery endurance. With ANC off, you get up to 65 hours of continuous playback – among the best in its class. With ANC on, you still get an impressive 50 hours. For moderate users, this could mean weeks of use without recharging. Even heavy users will get several days.

Fast charging delivers 4 hours of playback from just a 5‑minute charge – perfect for when you forget to charge overnight. A full charge takes approximately 2 hours via USB‑C. Battery status can be monitored via the JBL Headphones app or LED indicator on the headphones.

5. Audio Performance – 40mm Drivers with JBL Signature Sound and Spatial Audio

The JBL Live 670NC are equipped with 40mm dynamic drivers tuned to JBL’s signature sound – notably bass‑heavy. The low end is punchy and energising, making hip‑hop, EDM, and pop sound exciting. Mids are slightly recessed but remain clear, and treble is smooth without harshness. This fun, engaging sound signature is ideal for casual listening.

Spatial Sound creates virtual surround sound from any stereo content, enhancing movies, games, and live recordings. You can toggle Spatial Sound on/off via the JBL Headphones app. The headphones support AAC codec for high‑quality streaming on both iOS and Android. Through the app, you can further customise the sound using a 5‑band EQ or use Personi‑Fi 2.0 (see section 7) to create a personalised hearing profile.

6. True Adaptive Noise Cancellation and Smart Ambient Modes

The JBL Live 670NC features True Adaptive Noise Cancelling with four noise‑sensing microphones. This system automatically adjusts the strength of ANC based on your environment in real time. It is effective at blocking low‑frequency noise like engine rumble, traffic, and HVAC hum. However, reviewers note it is less effective at cancelling speech or high‑pitched office chatter compared to over‑ear flagship ANC headphones.

Smart Ambient and TalkThru modes include:

• Ambient Aware – Enhances environmental sounds for safety while walking near traffic.

• TalkThru – Lowers music volume so you can have a quick conversation without removing the headphones.

You can toggle between ANC on, Ambient Aware, and TalkThru via a dedicated button on the ear cup.

7. Personi‑Fi 2.0 and JBL Headphones App Customization

The JBL Headphones app (available for Android and iOS) unlocks several features:

• Personi‑Fi 2.0 – A hearing test that creates a personalised sound profile tailored to your specific hearing. This is a significant step up from generic EQ presets.

• EQ presets – Choose from Default, Bass, Vocal, or create a custom 5‑band EQ.

• Spatial Sound – Toggle the virtual surround effect on/off.

• ANC/Ambient mode settings – Adjust the level of noise cancellation.

• Voice prompt settings – Customise or disable voice announcements.

• Firmware updates – Keep the headphones up to date.

• Battery status – View precise remaining charge.

The app is user‑friendly and enhances the overall experience. For Android users, the app integrates seamlessly with the Android ecosystem.

8. Connectivity – Bluetooth 5.3, Multipoint, and Voice Assistants

The JBL Live 670NC use Bluetooth 5.3, supporting LE audio via later firmware updates. Benefits include stable connectivity, improved power efficiency, and a range of up to 10 metres. Multi‑point connection allows you to connect to two devices simultaneously – for example, your laptop for Zoom calls and your phone for music – switching seamlessly between them.

The headphones support voice assistants: Google Assistant and Amazon Alexa can be activated by voice (“Hey Google”) or by tapping the ear cup. Google Fast Pair on Android makes initial pairing effortless.

9. Smart Features – Auto Play/Pause and Hands‑Free Control

The JBL Live 670NC include built‑in wearing sensors that automatically pause your music when you take the headphones off and resume playback when you put them back on. This is a convenient feature that saves battery and eliminates manual control. Hands‑free voice control is also available via the integrated microphones.

10. What’s in the Box

When you purchase the JBL Live 670NC, you will typically receive:

• JBL Live 670NC headphones

• USB‑C charging cable

• Quick start guide

• Warranty card

Note: A wall charger is not included. A carrying pouch is not included. No 3.5mm audio cable is included.

11. Pros and Cons

Pros

Cons

12. Frequently Asked Questions (FAQ)

Q1: Does the JBL Live 670NC have active noise cancellation?

A: Yes, it features True Adaptive ANC with four microphones.

Q2: Can I use them while charging?

A: No, they do not support wired audio. You can only use them wirelessly; charging disables playback.

Q3: Are they good for gaming?

A: No, wireless latency is high; use wired headphones for gaming.

Q4: Are the ear cushions replaceable?

A: Yes, they can be replaced; contact JBL support or third‑party sellers.

Q5: What is Personi‑Fi 2.0?

A: A hearing test feature in the JBL Headphones app that creates a personalised sound profile tailored to your ears.

13. Conclusion – Is the JBL Live 670NC Worth It?

The JBL Live 670NC is an excellent choice for anyone seeking mid‑range on‑ear wireless headphones that prioritise battery life, bass‑heavy sound, and smart features. With up to 65 hours of playback (50 hours with ANC), 5‑minute fast charging, True Adaptive ANC, Spatial Sound, and Personi‑Fi 2.0, they offer great value. The lightweight, foldable design makes them perfect for commuters and travellers. Auto play/pause and multipoint connectivity add convenience.

For Android users, the Live 670NC integrate seamlessly with the Android ecosystem via Fast Pair and the JBL Headphones app. While the on‑ear design may cause fatigue over long periods and ANC is less effective against speech, the overall package is compelling. If you want long‑lasting, bass‑focused headphones with personalised sound, the JBL Live 670NC are a smart investment.

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