Bluetooth has come a long way. Whether it's gone far enough to satisfy us serious listeners is a different question.
Anyone who remembers the early days — when Bluetooth speakers sounded compressed, congested, and unmistakably wrong — has good reason to wonder whether anything has truly changed or whether wireless is destined to always come second.
The original Bluetooth audio codec, SBC, was a low-bitrate lossy compression scheme that audibly chewed up music in obvious ways — smeared transients, flattened dynamics, congested midrange. Modern codecs are dramatically better. LDAC, aptX HD, and the newer aptX Lossless can transmit at much higher bitrates and meaningfully closer to bit-perfect on a strong connection. For casual listening, walking around with headphones, or filling a kitchen with background music, today's Bluetooth is genuinely impressive compared to what we had ten years ago.
That said, Bluetooth Classic still has fundamental bandwidth limitations and depends heavily on a reliable radio link, which in practice means it drops down in quality when interference is high or distance is large. The newer LE Audio standard with the LC3 codec is more efficient and better behaved, and Auracast adds interesting capabilities for multi-listener streaming. But all of these are still working within a wireless medium designed primarily for cordless headsets and accessories, not for delivering bit-perfect high-resolution audio to a serious system. The radio band is shared, the packet sizes are constrained, and audiophile-grade fidelity simply wasn't the design target.
For our use cases as audiophiles, Wi-Fi-based protocols are the way to go. AirPlay 2, UPnP, and proprietary streaming protocols like the one inside our AirLens can deliver fully lossless, high-resolution audio over standard home networks with rock-solid reliability. That's already happening in plenty of audiophile systems today, and the sound is genuinely indistinguishable from a wired source when implemented well.
Bluetooth is great when convenience is the priority. When fidelity is the priority, we're still on the wire — or on Wi-Fi.
That distinction will probably soften over time, but it hasn't softened yet.
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