The Tune 670NC is a wireless on-ear headphone from JBL's Tune range, the brand's mainstream line for everyday listening. It brings adaptive noise cancelling, multipoint Bluetooth and an unusually long battery life to a lightweight, flat-folding design, positioning it as a travel and study headphone for users who want features from pricier models without the size and weight of an over-ear design.
Key specs that matter
JBL fits 32mm dynamic drivers rated from 20Hz to 20kHz, with 32-ohm impedance and 98dB SPL sensitivity at 1kHz. Bluetooth 5.3 supports the A2DP 1.4, AVRCP 1.6.2 and HFP 1.8 profiles, with LE Audio announced as an over-the-air update. Battery life reaches 70 hours with noise cancelling off and 44 hours with it on, a full charge takes around two hours via USB-C, and a five-minute top-up adds about three hours of playback. The headphone weighs 174g.
Engineering and use context
Adaptive Noise Cancelling continuously monitors ambient noise and adjusts the cancellation level to the environment, so it responds differently to a quiet library and a busy bus without manual switching. Smart Ambient complements it with two modes - Ambient Aware lets surrounding sound through for safety outdoors, while TalkThru lowers playback and emphasises voices for short conversations without removing the headphone. For calls, VoiceAware feeds the user's own voice back into the earcups to avoid speaking too loudly, a common problem with closed headphones. The earcups fold flat and the padded headband and soft cushions are designed around the low weight for all-day wear. Multipoint lets the headphone stay connected to two devices at once, for example a laptop for a video lesson and a phone for incoming calls. Controls are physical buttons on the earcups, and voice prompts in the user's language guide feature changes. A detachable 3.5mm audio cable is supplied, so the headphone keeps working as a wired model when the battery is empty.
Pairing
Any Bluetooth-equipped phone, computer or television can act as the source, and the free JBL Headphones app handles noise cancelling levels, ambient modes and firmware updates, including the planned LE Audio support. The Smart Audio & Video feature switches the Bluetooth link between a quality-focused mode for music and a lower-latency mode for gaming and video. With the supplied cable, it connects to in-flight systems and other analogue headphone outputs.
Alternatives
JBL's own Tune 770NC offers a larger over-ear format with the same adaptive noise cancelling concept for users who prefer earcups that surround the ear.