The JBL Tune 780NC uses an over-ear fit and features a closed-back design with stereo speakers. It can be folded for more compact storage, and both its detachable cable and tangle-free construction add to its everyday practicality. The headphones are not designed for kids and carry no water resistance rating. A detachable, tangle-free cable rounds out a design focused on straightforward usability rather than rugged or child-oriented use cases.
The JBL Tune 780NC covers a standard frequency range of 20 Hz to 20,000 Hz through 40 mm driver units, and it does not use a neodymium magnet. Noise management is handled on two fronts: active noise cancellation (ANC) works alongside passive noise reduction to cut down on unwanted sound from the environment. The headphones also support spatial audio, adding a positional dimension to playback beyond standard stereo reproduction.
The JBL Tune 780NC runs on a built-in rechargeable battery that is not removable, offering up to 76 hours of playback in standard wireless mode or 50 hours when active noise cancellation is enabled. Charging is handled via USB Type-C, while wireless charging and solar power are not supported. A battery level indicator is included so users can keep track of remaining charge without guesswork.
The JBL Tune 780NC supports both wireless and wired connectivity, with the wireless side running on Bluetooth 6 and a maximum range of 10 m. Bluetooth LE Audio and fast pairing are included, while NFC pairing is not available. On the codec front, the headphones do not support aptX, aptX Adaptive, aptX HD, aptX Low Latency, aptX Lossless, AAC, LDAC, LDHC, or Auracast, keeping the wireless audio stack relatively straightforward.
The JBL Tune 780NC can be used as a headset, backed by four microphones — including noise-canceling mic capability — for handling calls, though a dedicated mute function is not available. Controls are placed directly on the headphone unit rather than on an in-line cable panel, and ambient sound mode lets users let in external audio when needed. Multipoint connectivity supports two simultaneous device connections, and the headphones come with a one-year warranty.