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If you want a wired, transparent retro design with a limited lifetime warranty and zero charging to think about, choose Koss CL/20; if you need active noise cancelling with a real transparency mode, Bluetooth 5.4 and up to 160 hours of battery, choose FunHub Over-Ear Hybrid Active. That's the whole decision in one line, and the rest of this page is me showing you why.
• Koss CL/20 — biggest strength: a genuinely transparent shell (headband, earcups and even the cord) paired with wired simplicity, a 3.5mm plug, on-board volume control and a limited lifetime warranty.
• Koss CL/20 — biggest trade-off: it's wired only, on-ear rather than over-ear, and its "noise control" is really passive sound isolation from the leatherette cushions — there's no ANC and no transparency mode.
• FunHub Over-Ear Hybrid Active — biggest strength: hybrid feedforward + feedback ANC that the spec sheet says blocks up to 95% of background noise, plus a switchable transparency mode, Bluetooth 5.4, multipoint and a claimed 160-hour battery figure.
• FunHub Over-Ear Hybrid Active — biggest trade-off: it's a 1-year-warranty product with a battery that will eventually age, and its modes are cycled with a button, so you have to learn the presses.
• Who each is for: Koss CL/20 for retro-style listeners, at-home wired setups and anyone who hates charging; FunHub for commuters, flyers and gym-goers who want ANC and transparency on tap.
The CL/20 is a design statement first and a utility headphone second — and I mean that as a compliment. The clear transparent earcups and headband let you see the inner workings, which is the entire point of the retro 90s look. Underneath that shell it's a straightforward wired on-ear with a 3.5mm jack, a 60-ohm impedance rating, a 103 dB sensitivity figure and a frequency range of 16 Hz to 20,000 Hz. Nothing exotic, but the numbers describe an easy-to-drive headphone that a laptop, tablet or gaming device can push without any extra hardware.
The comfort story is plush leatherette and sponge earpads with an adjustable sliding yoke headband, and Koss calls the cushions out specifically for acoustic isolation — which is passive blocking, not active cancellation. That distinction matters. If you're sitting at a desk, editing, gaming, or just want a pair you can leave plugged in forever, the isolation plus the closed cups is plenty. The ultra-light build and the fact that it folds into nothing complicated also make it a decent toss-in-the-bag pair.
Who should buy it: someone who likes the transparent aesthetic, wants a wired connection with no pairing menus, values a limited lifetime warranty, and listens in relatively controlled environments. Who should skip it: anyone who needs to silence a plane cabin, wants a transparency mode to hear announcements or traffic, needs wireless freedom, or prefers a full over-ear fit instead of on-ear cups. If that's you, the CL/20 will feel like a step backwards no matter how good it looks.
This is the opposite philosophy: a feature-dense wireless over-ear built around its noise-control modes. The headline is the hybrid ANC — feedforward plus feedback — which FunHub rates as blocking up to 95% of background noise. Just as important for the topic of this page, it has a genuine transparency mode you cycle to with the NC button: first press for transparency, second for ANC on, third for ANC off. That single button is what separates it from the CL/20's passive isolation.
Battery is the other big number. There's a 1000mAh cell inside, a 2.5-hour charge time, a claimed 64 hours with ANC on and 93 hours with ANC off, and a 160-hour standby figure. Even if you discount those claims heavily for real-world volume levels, this is clearly a headphone designed to survive long flights and multi-day trips without a charger. Bluetooth 5.4 with multipoint lets it hold two devices at once, so you can take a call on your phone while a laptop stays connected.
The physical design is over-ear with oval cups, memory foam and skin-friendly protein leather that FunHub says is comfortable with glasses, an ergonomic headband, and a 180° foldable hinge for packing. It's rated IPX4, which covers sweat and light splashes — useful for the gym, not for swimming. You also get a 3.5mm audio cable in the box, so it can run wired if the battery is dead. Extras: an HD call mic, a hard-wired 3.5mm jack, USB-C charging, and a 1-year warranty.
Who should buy it: commuters, travelers, gym users and remote workers who want to flip between blocking the world out and letting it in without removing the headphones. Who should skip it: people who dislike button-cycled modes, anyone who wants the transparent retro look, and buyers who'd rather not manage a rechargeable battery at all.
Side-by-Side: Which Should You Choose?
• Best for transparency mode → FunHub Over-Ear Hybrid Active. It has a dedicated transparency setting you toggle with the NC button; the Koss CL/20 has no electronic transparency mode at all.
• Best for battery life → FunHub Over-Ear Hybrid Active. Up to 64 hours with ANC on, 93 hours with ANC off, and 160 hours standby on a 2.5-hour charge.
• Best for never charging → Koss CL/20. It's wired with a 3.5mm plug, so there's no battery to top up and no pairing to redo.
• Best for wireless freedom and multipoint → FunHub Over-Ear Hybrid Active. Bluetooth 5.4 with a 10-metre range and two-device connection.
• Best for a retro transparent look → Koss CL/20. Clear earcups and headband showing the internals, in a deliberately 90s-inspired style.
• Best for fit preference → depends on your ears. Koss is on-ear with leatherette and sponge cushions; FunHub is over-ear with oval memory-foam cups.
• Best for long-term peace of mind → Koss CL/20. A limited lifetime warranty versus FunHub's 1-year coverage, and no battery to degrade over time.
• Best for gym and light sweat → FunHub Over-Ear Hybrid Active. It carries an IPX4 rating; the Koss sheet lists no water resistance.
In my opinion, the FunHub Over-Ear Hybrid Active is the better buy for most people in 2026, because transparency mode and ANC are the two features that actually change how you use headphones in public — and the Koss CL/20 simply doesn't compete on either. The huge battery figure, multipoint Bluetooth and IPX4 rating make it the more versatile daily driver. I'd only steer you to the Koss CL/20 if you specifically want the clear retro design, insist on wired simplicity, or want the reassurance of a limited lifetime warranty and no battery to think about. Two very different products, one clean split: features and flexibility on the FunHub side, aesthetics and permanence on the Koss side. Check the current price on Amazon before you commit, since that gap often decides it.
Transparency mode uses the headphone's microphones to pipe outside sound in through the speakers, so you can hear announcements, traffic or a colleague talking without taking the headphones off. It's the opposite of noise cancelling: instead of blocking the world, it deliberately lets it through. On the FunHub Over-Ear Hybrid Active it's one of three settings — noise reduction, transparency and normal.
How to turn off transparency mode headphones?
It's what makes a headphone safe and practical in public. You can keep music playing while still catching a platform announcement, a bike bell or someone saying your name. That's the exact scenario the FunHub's mode button is built for, and it's the capability the Koss CL/20 lacks entirely — the Koss relies on its cushions for passive isolation instead.
It's a useful backup. The FunHub Over-Ear Hybrid Active ships with a 3.5mm audio cable, so you can keep listening if the battery runs out, and the Koss CL/20 is wired-only by design with a standard 3.5mm jack for laptops, tablets and gaming devices. If you never want to think about charging, the Koss is the simpler answer; if you want both, the FunHub gives you wireless and wired in one.
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