Seehd24 Page

A 24-bit signal has a theoretical dynamic range of 144 dB. But S/PDIF's embedded clock recovery (PLL) typically introduces timing jitter of 200–500 ps in consumer gear. That jitter modulates the amplitude of the highest-frequency content, folding into the noise floor at approximately -110 dBFS. In practice, . You get ~20-21 bits of real resolution, plus 3 bits of marketing.

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When you next see an orange RCA jack labeled "Digital Out," remember: inside that plastic shell, a 24-bit word is being transmitted LSB-first, preceded by a preamble that violates its own encoding rules, hoping that the receiver’s PLL is having a good day. A 24-bit signal has a theoretical dynamic range of 144 dB