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Codec guide
Bluetooth codecs explained
A plain-English guide to SBC, AAC, aptX, LDAC, LC3, and why the best codec depends on both your headphones and your phone.
Built for buyers comparing Bluetooth headphones, earbuds, phones, dongles, latency, lossless claims, and hi-res audio support, using critic review score, user score where available, release age, price, and value pressure.
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Quick take
Codec support only matters when both ends support the same codec: headphones, phone, computer, dongle, firmware, and app settings all have to line up.
SBC and AAC are enough for many listeners. Higher-bitrate codecs can help, but tuning, fit, ANC, drivers, and source quality usually matter more.
Low latency and high bitrate are different jobs. Gaming and video calls need stable delay; hi-res music needs a higher quality link.
Codec map
What each Bluetooth codec is usually good for
SBC
Best for: Baseline compatibility
Watch for: Works almost everywhere, but it is rarely the reason to buy a premium pair.
AAC
Best for: iPhone and Apple-device listening
Watch for: Common on AirPods and many earbuds; quality depends heavily on device implementation.
