Guides · 3 min read · 18 August 2026
LDAC, aptX, AAC: a plain guide to codecs
What the letters on the box mean for what you hear.
A codec is how your phone packs music to send it over Bluetooth. Bigger packages carry more detail.
On an iPhone, AAC is the best you will get, and it sounds very good. On Android, LDAC can carry close to lossless audio when the connection is strong.
If you mostly stream podcasts, any codec will do. If you keep a lossless library, look for LDAC or aptX on the spec sheet.
Pairs mentioned
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