I've measured it for my Anthem mrx-300.
Full standby about 4 W
CEC standby about 76 W (about £100 per year if on always)
On but with no sound playing a few watts more
Playing quietly a few watts more.
So reasonable volume might be 100 W total, versus a spec of "500 W max"
Esto comenta un forero de Avforums, pero no especifica si ese consumo en Standby (76w), es con el passtrough activado... y es del modelo 300, no se si con los otros varia.

Si encuentro mas info, la postearé...