For years, Bluetooth audio had a deserved reputation for poor quality. Early codecs compressed audio aggressively, latency was unpredictable, and the connection itself was fragile. If you cared about sound quality, you used a cable.
That is no longer the case. The important change is not the Bluetooth version number — it's the codecs. Modern codecs like LDAC and the aptX family have fundamentally changed what's possible over a wireless link. LDAC can transmit audio at up to 990 kbps — enough for genuine high-resolution playback. aptX HD and aptX Adaptive offer robust, low-latency transmission at quality levels that are difficult to distinguish from a wired connection in normal listening conditions.