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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-17 · 7 min read · Independent comparison
• JBL Live 670NC – biggest strength: True Adaptive ANC with Smart Ambient, plus JBL Spatial Sound from 40mm drivers. It's the more feature-dense headphone by a wide margin.
• JBL Live 670NC – biggest trade-off: It's an on-ear design at a heavier 0.42 kg, and ANC costs you battery life — up to 65 hours drops to about 50 hours with Bluetooth and ANC running.
• Amazon Renewed JBL Tune 720BT – biggest strength: Up to 76 hours of playback, a 2-hour full charge, and a lighter 220 g over-ear build that folds flat.
• Amazon Renewed JBL Tune 720BT – biggest trade-off: It has no active noise cancelling (only passive sound isolation), no wired jack at all, and it's a renewed unit with a 90-day limited warranty instead of a full year.
• Who each pick is for: JBL Live 670NC is for commuters, students and remote workers who want to control the noise around them. The Amazon Renewed JBL Tune 720BT is for long-session listeners and budget-focused buyers who care most about runtime and comfort.
The Live 670NC is the "do more" headphone of this pair. Its headline trick is True Adaptive Noise Cancelling driven by noise-sensing mics that adjust in real time, so the level of cancellation shifts as your environment changes — a train platform, a shared office, a café. When you'd rather stay aware, Smart Ambient pushes the outside world back in without you taking the headphones off. That single feature pair is what separates it from almost everything else at its tier, and it's the reason I'd point a frequent flyer or a cubicle worker this way.
Then there's the listening experience. The 40mm dynamic drivers deliver JBL Signature Sound, and JBL Spatial Sound turns ordinary stereo into a virtual surround presentation — a genuinely useful thing for movies and games on a phone or laptop. Multipoint lets it hold two Bluetooth connections at once, so a call can interrupt your movie without you re-pairing anything. Auto play/pause handles itself when you lift the earcups off. Battery is rated up to 65 hours with Bluetooth on and ANC off, or around 50 hours with ANC running, and a 5-minute top-up buys roughly 4 hours. A 3-hour charge gets you back to full. You also get a 3.5 mm jack and a detachable audio cable, so it can go wired when the battery is empty — a quiet but important fallback.
Amazon Renewed JBL Tune 720BT: Who It's For
The Amazon Renewed JBL Tune 720BT is the endurance pick. Up to 76 hours of playback on a single charge is the number that matters here, and the 2-hour full recharge with the included Type-C cable is quicker than the Live 670NC's 3 hours. A 5-minute speed charge gives you about 3 extra hours — slightly less than the Live 670NC's 4, but from a much bigger tank. If your habit is throwing headphones in a bag and forgetting about the charger for a week or two, this is the model built for that.
Comfort is the other argument. At 220 g with an over-ear fit, the Tune 720BT spreads weight around your ears rather than pressing on them, and it folds for storage. It runs Bluetooth 5.3 and JBL Pure Bass Sound, and the free JBL Headphones app lets you shape the sound with an EQ and hear voice prompts in your chosen language. Calls are handled with physical buttons on the earcup plus Voice Aware, which lets you hear your own voice while you talk — a small thing that makes long calls less shouty. Controls are listed as app and touch-based alongside voice control.
The honest caveats: there is no active noise cancelling, only passive sound isolation, so it won't quiet a plane cabin the way the Live 670NC will. There's also no headphone jack, so once the battery is gone, you're done until it charges. And because this is a renewed product, the warranty is a 90-day limited one rather than a full year, and the included accessories are listed as a cable and user manual. Renewed units are previously owned items that have been inspected and brought back to working condition — the trade-off is real, but so is the lower barrier to entry. It comes in Blue with a plastic and TPE build.
Side-by-Side: Which Should You Choose?
• Best for active noise cancelling → JBL Live 670NC. True Adaptive ANC plus Smart Ambient is a feature the Tune 720BT simply doesn't have.
• Best for maximum battery life → Amazon Renewed JBL Tune 720BT. Up to 76 hours versus up to 65 hours (about 50 with ANC on).
• Best for movies, games and immersion → JBL Live 670NC. JBL Spatial Sound and 40mm dynamic drivers are aimed squarely at that.
• Best for wired listening as a backup → JBL Live 670NC. It has a 3.5 mm jack and a detachable audio cable; the Tune 720BT has no jack.
• Best for switching between phone and laptop → JBL Live 670NC. Multipoint holds two Bluetooth connections at once.
• Best warranty coverage → JBL Live 670NC. A 1-year manufacturer warranty versus 90 days limited on the renewed unit.
• Best for buyers who want the lowest-cost way into JBL wireless → Amazon Renewed JBL Tune 720BT. Check the current price on Amazon to see how the two actually compare for you — value here depends entirely on that gap.
If I were buying one of these for myself, I'd take the JBL Live 670NC. Adaptive noise cancelling, Spatial Sound, multipoint, a wired fallback and a full year of warranty coverage is a combination the Tune 720BT can't match no matter how long its battery runs. The on-ear fit and the heavier build are the price of admission, and for commuting, studying or working in a noisy room, that's a trade I'd make every time. I'd only switch to the Amazon Renewed JBL Tune 720BT if runtime and lightweight over-ear comfort were my top two priorities and I never needed noise cancelling. In my opinion, most people torn between these two will be happier with the Live 670NC.
For most buyers, yes — you're getting adaptive ANC, spatial sound, multipoint, a 3.5 mm jack and a 1-year warranty instead of 90 days. The Tune 720BT only wins on battery life and weight. Compare the current prices on Amazon before deciding.
No. Its noise control is listed as sound isolation, which is passive — the earcups block some outside sound but there's no active cancellation. If blocking noise is your main goal, the Live 670NC is the one to pick.
The Tune 720BT is rated up to 76 hours; the Live 670NC is up to 65 hours, dropping to around 50 hours with Bluetooth and ANC both on. The Tune 720BT also recharges faster at about 2 hours versus 3.
Renewed means the item was previously owned and has been inspected and restored to working condition. The main practical differences are the 90-day limited warranty and the basic accessory bundle, so weigh that against the lower cost — check the current price on Amazon first.
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