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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a bass-forward, closed-back on-ear pair with a dedicated bass button and a wired fallback, choose Philips TAH4205; if you need marathon battery life, multipoint pairing and app-based sound tuning, choose Sony WH-CH520. That is the short version. The longer version matters if you are shopping for audiophiles — or for someone who just wants their music to sound the way they like it without babysitting a charging cable.
• Philips TAH4205 — biggest strength: a closed-back on-ear design with 32mm neodymium dynamic drivers, a one-press BASS boost button and a 3.5mm jack, so it works wirelessly or plugged in.
• Philips TAH4205 — biggest trade-off: no app, no multipoint, no active noise cancellation — just sound isolation and a physical control button.
• Sony WH-CH520 — biggest strength: up to 50 hours of playback, 3-minute quick charge for roughly 90 minutes of listening, multipoint for two devices and EQ Custom via the Sony Headphones Connect app.
• Sony WH-CH520 — biggest trade-off: no 3.5mm jack at all, so once the battery is empty you are simply done listening until it charges.
• Who each is for: pick Philips if you want tactile bass control and a wired option; pick Sony if you want battery endurance, voice assistant support and software-level sound shaping.
The TAH4205 is a straightforward piece of hardware. On-ear, closed-back, plastic and rubber build, 150 g on the head, Bluetooth 5.0 with a 10-metre range. Inside are 32mm dynamic neodymium drivers at 32 ohm impedance, and the whole point of the design is that BASS button on the housing. Press it and the low end gets pushed forward. For anyone who listens to bass-heavy genres — hip-hop, EDM, modern pop — that is a genuinely useful physical control rather than a buried menu setting.
Battery is rated at up to 29 hours, and the fast-charge claim is 15 minutes for about 4 hours of use. Charging is over USB-C, and the flat-folding cushioned headband plus the included ear cushions make it easy to toss in a bag. Crucially, there is a 3.5mm jack. If the battery dies mid-flight or mid-session, you plug in and keep going. That single detail is why I would still point certain buyers here.
Who should buy it: someone who wants a no-fuss on-ear set with a wired backup, a bass toggle they can hit without unlocking a phone, and controls they can operate by feel. Who should skip it: anyone who needs to stay connected to a laptop and a phone at the same time, anyone who wants to fine-tune the sound curve, and anyone who wants active noise cancellation rather than the passive isolation a closed back provides.
The WH-CH520 is the more software-driven product, and that is its whole personality. Bluetooth 5.2, 24 ohm impedance, dynamic drivers rated 20 Hz to 20,000 Hz, sensitivity 100 dB. The headline number is battery: up to 50 hours, with a 3-hour full charge and a quick-charge figure of roughly 90 minutes of playback from a 3-minute top-up. For multi-day trips, festival weekends or a work week of commuting, that is the spec that actually changes how you live with the thing.
Then there is the feature list around it. Multipoint lets you hold two Bluetooth connections and jump from a video on your laptop to a call on your phone without re-pairing. The built-in microphone handles hands-free calls, and you can trigger "OK Google" or "Hey Siri" to reach your voice assistant — which is exactly the kind of thing that makes these workable as voice assistant headphones for audiophiles who split their day between music and calls. EQ Custom in the Sony Headphones Connect app lets you pick presets per genre or save your own, and DSEE upscales compressed files. The swivel earcups and soft earpads with an added head cushion are built for long sessions, and it comes in six colours.
Who should buy it: commuters, call-heavy users, people who hate charging, and anyone who wants to tune their sound in an app rather than accept a fixed tuning. Who should skip it: anyone who wants a cable option, because there is no jack here, and anyone who wants the sound signature decided by the hardware rather than by an app.
• Best for battery life → Sony WH-CH520. Up to 50 hours versus up to 29 hours on the Philips.
• Best for a wired fallback → Philips TAH4205. It has a 3.5mm jack; the Sony has none.
• Best for bass on demand → Philips TAH4205. The dedicated BASS boost button is a one-press hardware control.
• Best for sound customization → Sony WH-CH520. EQ Custom and DSEE in the Sony Headphones Connect app.
• Best for switching between devices → Sony WH-CH520. Multipoint holds two connections at once.
• Best for hands-free calls and voice assistants → Sony WH-CH520. Built-in mic plus "OK Google" / "Hey Siri" support.
• Best for travel packing → tie. Philips flat-folds; Sony uses swivel earcups. Both are on-ear and light.
• Best for a plug-and-play approach → Philips TAH4205. No app, no account, no setup beyond pairing.
In my opinion, the Sony WH-CH520 is the better buy for most people in 2026, and it is the one I would order. The 50-hour battery, multipoint pairing, EQ Custom tuning and voice assistant support cover more of the day-to-day than a bass button does, and for audiophiles who want to shape their own sound rather than accept a fixed curve, the app is the difference-maker. I would only steer you to the Philips TAH4205 if a 3.5mm jack is non-negotiable for you, or if you specifically want that physical bass toggle. Check the current price on Amazon before you commit — that is the one variable I cannot weigh for you.
FAQ
Is the Sony WH-CH520 better than the Philips TAH4205 for battery life?
It does — a 3.5mm jack, so you can listen wired when you want to. The Sony WH-CH520 has no jack at all, so it is Bluetooth-only and needs charge to work.
The Sony WH-CH520. It has a built-in microphone for hands-free calling and supports "OK Google" and "Hey Siri" activation. The Philips TAH4205 lists touch-based volume and media controls but no voice assistant support.
Only the Sony WH-CH520. It supports multipoint connection, so you can pair two Bluetooth devices and switch between them. The Philips TAH4205 does not list multipoint.
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