Codec SBC nel 2025: Limiti e Prospettive

In 2025, SBC (Subband Codec) remains the default and mandatory audio codec for all Bluetooth A2DP devices, ensuring basic compatibility across headphones, speakers, and smartphones ^{[1] [3] [7] [8] [10]}. It is characterized by relatively low computational complexity and moderate audio quality, but its limitations in efficiency, audio fidelity, and latency are widely recognized—especially compared to more advanced codecs now available ^{[3] [8]}.

Key details about SBC in 2025:

• It operates at up to 16-bit/48kHz and typically maxes out at 328 kbps ^{[3] [8]}.
• SBC is not optimized for low latency or high-resolution audio, and its quality can be noticeably worse compared to codecs like aptX HD, LDAC, or the newer LE Audio codec LC3 ^{[3] [1] [7]}.
• While it is still used by default when no better codec is supported by both devices, many users and manufacturers now prefer advanced codecs for improved audio quality ^{[2] [3] [8]}.

Bluetooth audio landscape in 2025:

• Lossless Bluetooth is gaining traction, with codecs like aptX Lossless and LE Audio (LC3 codec) enabling higher audio fidelity and lower latency than possible with SBC ^{[2] [3] [1]}.
• LE Audio and the LC3 codec, the official successors to SBC, offer better compression, improved efficiency, and greater features such as multi-stream audio and hearing aid support; LC3 is part of the Bluetooth 5.2 and newer standards and is increasingly adopted in new devices ^{[1] [5] [6]}.
• SBC remains important for backward compatibility, but devices supporting only SBC are increasingly seen as budget or legacy options ^{[7] [8]}.

In summary: SBC is still present as the baseline Bluetooth audio codec in 2025, but newer codecs such as LC3 (for LE Audio), aptX Lossless, and LDAC are superior choices where supported, offering significant improvements in sound quality and overall user experience ^{[1] [2] [3] [7] [8]}.