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Audio is captured at 44.1 kHz, and encoded at 256 Kbps.

Amazon caps it at a rate of 80 Kbps, which the company says is a fraction of the bandwidth used to stream a typical high-definition video.

A 3-minute song will be approximately: – 1.5 MB with high efficiency- 6 MB with high quality at 256 kbps- 36 MB with lossless at 24-bit/48 kHz- 145 MB with hi-res lossless at 24-bit/192 kHzSupport varies and depends on song availability, network conditions, and connected speaker or headphone capability.

Notice how SBC starts to sound crackly even at 192 kbps, while LC3 still sounds clear at 128 kbps.

To my ears, LC3 starts to sound pretty rough at 96 kbps, but it’s a trade-off I’d be willing to accept for an ultra-small pair of workout earbuds.