Sony STR-DA1000ES - Manual (Page 31)

ES Receivers V3.0 Page 31
• RS-232C interface (STR-DA2000ES and higher). To communicate with
third-party room automation systems, these receivers include RS-232C ports.
The ports also enable future firmware upgrades to the STR-DA5000ES and
DA9000ES.
• Front optical digital audio input (all models). As part of the Video 3 input
of the front panel, these receivers also accept optical digital audio, in addition
to Left/Right analog audio.
• Assignable digital input (all models). An optical or coaxial digital input can
be flexibly assigned to any video input, providing greater versatility when
connecting a second DVD player, an HDTV tuner or other digital video source
component.
• A/B speaker terminals (all models). Real estate on the back panel of
modern A/V receivers is severely limited. At the request of ES dealers, Sony
found a way to add a set of B speaker terminals.
Conclusion
Beginning with the PCM-701ES digital processor in 1982, the engineers of
Sony ES have been extending the capabilities of digital audio. Breakthroughs
like the S-Master Pro amplifiers take audio reproduction to the next stage in
sophistication, simplicity and sound quality. These ES receivers represent
another milestone in the digital technology. To appreciate the difference, just
turn them on and listen.