MULTI CHANNEL AV RECEIVERSTR-ZA3000ES/STR-ZA2000ES/STR-ZA1000ES

Auto Format Direct (A.F.D.)

This mode allows you to listen to higher-fidelity sound.

Auto Format Direct (A.F.D.):
Presets the sound as it was recorded/encoded without adding any surround effects.

However, this receiver will generate a low-frequency signal for output to the subwoofer when there is no LFE signals.