We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-02 · 6 min read · Independent comparison
If you want the most advanced noise cancelling and LDAC hi-res wireless audio, choose SONY WF-1000XM4; if you need marathon battery life, a Star Wars collectible design, and earbuds that keep working even when the case stays home, choose Audio-Technica ATH-CKS50TW2DV.
• SONY WF-1000XM4 biggest strength: Integrated Processor V1 noise cancelling plus LDAC support, which means it can stream high-bitrate hi-res audio over Bluetooth — a real edge for anyone hunting for proper LDAC headphones.
• SONY WF-1000XM4 biggest trade-off: 8 hours per charge with noise cancelling on and 24 hours total with the case, so the ATH-CKS50TW2DV outlasts it on pure stamina.
• Audio-Technica ATH-CKS50TW2DV biggest strength: Up to 25 hours in the buds alone (15 with ANC) plus 40 more in the case, and a Magnetic Switch that powers them down without the case.
• Audio-Technica ATH-CKS50TW2DV biggest trade-off: No LDAC and a Bluetooth 4 spec on the sheet, so it's built for everyday listening and bass-forward fun rather than hi-res codec chasing.
• Choose the SONY if calls, noise cancelling and codec quality matter most.
• Choose the Audio-Technica if you want the Darth Vader styling, huge battery numbers, and don't want to carry the case everywhere.
The WF-1000XM4 is the tech-forward pick of these two. Sony built it around the Integrated Processor V1, a dedicated chip for noise cancelling, paired with a new driver, redesigned noise-sensing microphones and foam-style Noise Isolation Earbud Tips. On paper that combination is aimed at one thing: cutting out the drone of a commute, a plane cabin or an open office so you can hear more of the music and less of the world.
Audio is where the LDAC angle matters. The spec sheet lists LDAC at 96 kHz sampling and 990 kbps, which is Sony's high-bitrate Bluetooth codec, along with DSEE Extreme upscaling and a frequency range that stretches to 40 kHz. If you stream from a service that supports it and your phone does too, this is the kind of earbud that rewards you for caring about codecs. Precise Voice Pickup Technology runs four microphones with a bone-conduction sensor, so calls and Speak-to-Chat voice detection stay clear even when it's loud around you.
Battery is 8 hours with noise cancelling on and 24 hours total with the case, a 5-minute quick charge adds up to 60 minutes of playback, and the case supports wireless charging. IPX4 handles sweat and splashes. Multipoint for two devices arrives via firmware update, and there's Alexa built in.
Audio-Technica ATH-CKS50TW2DV: Who It's For
This one is a different animal entirely, and that's the point. The ATH-CKS50TW2DV is a limited-edition Star Wars Darth Vader model, and Audio-Technica leans into it: the earbuds play character audio alerts for power on/off, Bluetooth connect and disconnect, and low battery, including the breathing and lightsaber sounds. If you're a fan, that's a genuinely fun detail you won't get anywhere else.
Under the styling it's a serious everyday earbud. Audio-Technica's proprietary 9 mm drivers are tuned for clear full-range sound with extra bass punch, and the numbers back the stamina claim: 25 hours of playback from the buds alone, plus 40 more in the case. With noise cancelling on, that's 15 hours in the buds and 25 in the case, and a 5-minute quick charge gives up to 90 minutes. The Magnetic Switch technology is the clever part — join the magnets and they power on, separate them and they power off, so you can leave the case at home and still conserve power.
Hybrid noise cancelling uses feedforward and feedback processing, with hear-through and talk-through ambience modes that also work during calls. Multipoint keeps two Bluetooth devices connected at once, the multifunction button is customizable for playback, volume, calls, voice assistant and ambience, and the buds work with Qi wireless chargers. IP5X dust protection and IPX5 water-jet resistance cover workouts and weather, though Audio-Technica is clear these aren't for baths or showers.
Buy it if you want huge battery, bass-forward tuning, wireless charging and a collectible look. Skip it if LDAC hi-res streaming or the most refined noise cancelling is your priority — the sheet lists Bluetooth 4 and no LDAC, and noise control is handled through its own hybrid system rather than Sony's processor.
• Best for LDAC and hi-res streaming → SONY WF-1000XM4. It's the only one of the two with LDAC at 96 kHz / 990 kbps.
• Best for battery life → Audio-Technica ATH-CKS50TW2DV. 25 hours in the buds beats Sony's 24 hours total including the case.
• Best for noise cancelling → SONY WF-1000XM4. The Integrated Processor V1 and dedicated noise-sensing mics are built specifically for this.
• Best for calls in noisy places → SONY WF-1000XM4. Beamforming mics plus a bone-conduction sensor are aimed squarely at voice pickup.
• Best for bass-forward everyday listening → Audio-Technica ATH-CKS50TW2DV. 9 mm dynamic drivers tuned for enhanced low end.
• Best for leaving the case at home → Audio-Technica ATH-CKS50TW2DV. The Magnetic Switch powers the buds off without the case, which is exactly why those 25 hours matter.
• Best for durability against dust and water jets → Audio-Technica ATH-CKS50TW2DV. IP5X plus IPX5 versus Sony's IPX4.
• Best for a gift or a fan → Audio-Technica ATH-CKS50TW2DV. The Darth Vader edition and character alerts are the whole appeal.
In my opinion, the SONY WF-1000XM4 is the one I'd buy for serious listening. If you care about LDAC headphones, noise cancelling that actually quiets a commute, and call quality that holds up when it's loud, nothing on the Audio-Technica sheet competes with that combination. The ATH-CKS50TW2DV is the better pick only if battery life, bass punch and the Star Wars design are what you're really after — and for a lot of buyers, honestly, they are. Both are strong; they just solve different problems. Check the current price on Amazon before deciding, since that's the one thing that can flip this call.
FAQ
what is ldac headphones
LDAC is a Bluetooth audio codec developed by Sony that streams at up to 990 kbps at 96 kHz sampling, far more data than standard Bluetooth audio. Headphones that support LDAC can receive that higher-bitrate stream, which is why it's associated with hi-res wireless listening. The SONY WF-1000XM4 supports it; the Audio-Technica ATH-CKS50TW2DV does not list it.
It refers to Sony earbuds and headphones that include the LDAC codec. On the WF-1000XM4, the spec sheet lists LDAC at 96 kHz sampling and 990 kbps alongside DSEE Extreme, Sony's upscaling tech. Together they're aimed at getting more detail out of compressed streams.
what is ldac support in headphones
It means the headphones can decode Sony's LDAC codec when the source device sends it. Your phone or player also has to support LDAC, and you usually enable it in the Bluetooth settings. Without it, the earbuds fall back to a standard codec.
what is ldac codec in headphones
LDAC is one of several Bluetooth codecs, alongside the more common SBC and AAC. Its selling point is bandwidth: up to 990 kbps versus the much lower rates of standard codecs. More bandwidth generally means less compression and more detail, which is the main reason LDAC buyers seek it out.
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