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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want the lighter, app-tunable on-ear option with the longer fast-charge story for all-day study or work sessions, choose Amazon Renewed JBL Tune 670NC; if you need a bigger over-ear build with spatial audio, a transparency mode, and wired backup, choose Srhythm NiceComfort 95.
• Amazon Renewed JBL Tune 670NC — biggest strength: Adaptive Noise Cancelling plus Smart Ambient with Ambient Aware and TalkThru, driven through the JBL Headphones app, at just 174 g in a foldable on-ear design.
• Amazon Renewed JBL Tune 670NC — biggest trade-off: It's an on-ear with no headphone jack, so it's wireless-only, and it's a renewed unit carrying a 90-day limited warranty rather than a new one.
• Srhythm NiceComfort 95 — biggest strength: A 264 g over-ear with 40 mm hybrid drivers topping out at 40 kHz, 360-degree spatial audio with head tracking, Transparency mode, five-mic ENC calling, and a metal build with a 3.5 mm jack.
• Srhythm NiceComfort 95 — biggest trade-off: Heavier on the head, and its control scheme leans on an app plus touch and a multi-function knob, which is more to learn than simple ear-cup buttons.
• Who the JBL is for: Commuters, students and remote workers who want featherweight on-ear comfort, a long battery figure and app-based sound shaping.
• Who the Srhythm is for: Listeners who want over-ear immersion, spatial audio, wired fallback and a more premium-feeling build for movies, gaming and travel.
The Tune 670NC does its best work when you want noise cancelling without weight on your head. At 174 g with a foldable on-ear frame, it's the kind of headphone you can wear through a long study block or a full workday and barely notice. Adaptive Noise Cancelling handles the constant drone, and when you need to rejoin the world, Smart Ambient splits into Ambient Aware for hearing your surroundings and TalkThru for quick conversations — both switched on from the JBL Headphones app.
That app is the real differentiator here. You get preset EQ modes or a manual EQ curve, and an Audio/Video mode toggle so you can prioritize sound quality or keep audio in sync with what's on screen. Bluetooth 5.3 with LE Audio keeps the wireless side current, and VoiceAware lets you hear your own voice on calls, which matters if you spend hours on meetings. The 70-hour battery figure and a 2-hour charge time are the headline numbers — the kind of runtime that means you charge on weekends, not every night.
Srhythm NiceComfort 95: Who It's For
The NiceComfort 95 goes the other direction: bigger, heavier and more feature-dense. The over-ear oval cups sit around your ears rather than on them, and the build mixes leather, metal, plastic and stainless steel with a 45-degree bevel polished aluminum finish. It weighs 264 g, so it makes its presence known in a way the JBL doesn't — but you're trading that weight for a fuller, more enclosed listen.
The audio story is the draw. Hybrid 40 mm drivers reach 20 Hz–40 kHz, with 16 ohm impedance and 120 dB sensitivity, which points to an easy-to-drive, detailed sound signature. On top of that sits 360-degree spatial audio with head tracking, which spatializes sound for movies and games, plus a Low Latency Game Mode for audio-visual sync. Adaptive Noise Cancelling adjusts its level to the environment, and the brand claims it blocks up to 95% of ambient noise — useful against plane engines, subway rumble or office AC. Transparency mode is the awareness counterpart: amplify the outside world without taking the headphones off, for a flight attendant, a coffee order or a safer walk.
Around that you get five microphones with ENC for calls, app-and-button control with touch and a multi-function knob, Google Assistant and Siri support, Bluetooth 6, a 10 m range, a 3.5 mm jack for wired listening, a two-pin airplane adaptor, and a travel case. Battery is rated at 100 hours. Warranty runs 18 months.
Who should buy it: over-ear loyalists, frequent travelers, and anyone who games or watches a lot of video and wants spatial audio and a wired option in the same package. Who should skip it: if you want the lightest possible headphone or the simplest possible controls, the heft and the app-plus-knob-plus-touch scheme will feel like more than you asked for.
• Best for all-day light comfort → Amazon Renewed JBL Tune 670NC (174 g on-ear, foldable).
• Best for maximum battery runtime → Srhythm NiceComfort 95 (100-hour rating vs the JBL's 70-hour rating).
• Best for app-based sound tuning → Amazon Renewed JBL Tune 670NC (preset EQ modes plus a manual EQ curve, and an Audio/Video mode toggle).
• Best for spatial audio and head tracking → Srhythm NiceComfort 95 (360-degree sphere audio with dynamic head tracking).
• Best for movies and gaming → Srhythm NiceComfort 95 (40 mm hybrid drivers, 40 kHz ceiling, Low Latency Game Mode).
• Best for wired listening → Srhythm NiceComfort 95 (3.5 mm jack; the JBL has no jack).
• Best for quick conversations without removing the headphones → Srhythm NiceComfort 95 (dedicated Transparency mode), though the JBL's Ambient Aware and TalkThru cover similar ground through the app.
• Best for buyers who want a longer warranty window → Srhythm NiceComfort 95 (18 months vs 90 days limited on the renewed JBL).
• Best for travel kit completeness → Srhythm NiceComfort 95 (travel case and two-pin airplane adaptor included).
In my opinion, the Srhythm NiceComfort 95 is the one I'd buy for a single pair to cover everything — over-ear immersion, spatial audio, a transparency mode for awareness, wired backup and an 18-month warranty make it the more complete package. The JBL Tune 670NC still has a real case: if light weight and app-tuned sound matter more to you than driver size, it's the more comfortable long-haul wear. But if you're only buying one, I'd take the Srhythm for the wider feature set and the over-ear fit.
Ambient Aware is a mode that pipes outside sound into your ear cups through the microphones instead of blocking it, so you can hear traffic, announcements or someone talking without removing the headphones. On the JBL Tune 670NC it's part of Smart Ambient alongside TalkThru, and you switch it on in the JBL Headphones app. Srhythm's equivalent on the NiceComfort 95 is called Transparency mode.
Bose models generally handle awareness through their own app or a dedicated button, and the exact steps differ by model. The same principle applies across brands: look for the awareness or transparency control in the companion app, or a mode button on the ear cup. On the JBL Tune 670NC that control lives in the JBL Headphones app; on the Srhythm NiceComfort 95 it's the Transparency mode setting via app or controls.
On most headphones you exit awareness mode the same way you entered it — the app toggle or the mode button cycles back to normal noise cancelling or off. Neither the JBL Tune 670NC nor the Srhythm NiceComfort 95 uses JLab's app, so if you're on a JLab model you'd use JLab's own controls. On the JBL, deactivating Ambient Aware in the JBL Headphones app returns you to Adaptive Noise Cancelling.
That comes down to how you weigh a renewed unit against a new one. The Tune 670NC is a 174 g on-ear with 70 hours of battery, Smart Ambient, Bluetooth 5.3 with LE Audio and a foldable frame, but the renewed listing carries a 90-day limited warranty rather than a manufacturer's longer term. If the feature set fits how you listen, check the current price on Amazon and decide; if warranty length is your priority, the Srhythm's 18-month term is the safer bet.
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