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Bluetooth LE transmitters enable older devices to utilize advanced audio codecs like LC3, LDAC, and aptX, enhancing compatibility without requiring device upgrades.
Questyle QCC Pro ($119) supports Bluetooth LE, LDAC, aptX Lossless, and works across Apple, Android, Windows, Linux, and Nintendo Switch platforms.
Creative BT-W6 ($80) includes a Windows app with features like a 13-band EQ and spatial audio, though limited in codec variety.