El DMX "va a menos velocidad" que el AES/EBU con lo que la calidad de la linea de transmisión no es tan crítica.
Copio de la "Vilipendia"
At the datalink layer, a DMX512 controller transmits asynchronous serial data at 250 kbaud. The data format is fixed at one start bit, eight data bits, two stop bits and no parity.
AES/EBU was designed primarily to support PCM encoded audio in either DAT format at 48 kHz or CD format at 44.1 kHz. No attempt was made to use a carrier able to support both rates; instead, AES/EBU allows the data to be run at any rate, and recovers the clock rate by encoding the data using biphase mark code (BMC).
Each sample time, one 64-bit frame is transmitted. This is divided into two 32-bit subframes or channels containing one sample each: A (left) and B (right). Each subframe consists of 32 time slots used to transmit individual data bits or synchronization information. 24 bits are available for audio data, of which 20 bits are normally used.[dubious – discuss]
192 consecutive frames are grouped into an audio block. Certain status information is transmitted once per audio block. At the default 48 kHz sample rate, there are 250 audio blocks per second.
No voy a echar cuentas, pero el AES/EBU "corre mucho mas"