Manual

ADDITIONAL SWITCHING SYSTEM
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1. AES & S/PDIF Digital In/Thru
Feature: The rear panel of DAC-SR sports two 25 pin D-Sub connectors (commonly called DB25s) wired to
the Tascam / Avid AES digital standard. Remember, these connectors can be wired for AES or S/
PDIF or any combination of the two. Up to a 24 bit depth with sampling rates from 32 kHz-192
kHz are supported. (The pinout wiring diagram resides in the appendix of this manual.)
Benefit: (A) Provides instantaneous switching between two 5.1 sets of digital inputs wired for AES or S/
PDIF (flexible like a yoga disciple). (B) Pass the signal forward to it’s next destination.
“So What?” (A) Monitoring all your digital sources through the same converter levels the playing field. In
other words, conduct comparative listening through the identical pristine audio converter.
Example: “What’s all that extra top end on the DVD pressing?” Might just be “crunch” generated from the
DVD player’s D/A converter. “Why can’t I pinpoint the ride cymbal?” Jitter from that cheap DVD
player could be smearing the image.
Tip:
, Dangerous Music is so concerned about the inviolability of your audio, that the DAC-SR will
actually clean up jitter from squalid incoming sources and pass it through with defined edges. The
instantaneous lock range is 32 kHz to 192 kHz.
“So What?” (B) Passing the signal forward opens up a myriad of possibilities.
Example: •MonitorthemainmixfromProTools.Passthisontoexternalhardware.
•Comparetheeffectedversion.PassthroughbackintoProToolsandeffectwithplug-ins.
•Compareagainsttheoriginalandhardwareeffectedversions.Passthroughtoanexternalrecorder.
•Comparetheoutputofthenalrecorderwithalltheaforementionedsources.Nowmakeaccurate,
critical decisions based on true comparisons. Pass through to a digital meter or see tip below.
Tip: , The rear Digital Inputs may be utilized for AES or S/PDIF in any combination. Save your cash! No
transformer is required. Simply purchase a snake wired in accordance with the pinout diagrams in
the appendix of this manual (cable does make a difference, use good quality). How is this black
magic possible? The S/PDIF standard is 500 millivolts peak to peak and the AES standard is 5
volts peak to peak. The DAC-ST is happy receiving anywhere from 300 millivolts to 5 volts, well
within tolerances, so you can keep on mixing the music, while we handle the technology.
Note: At the time of printing, the M-Audio 2626 was the only piece of gear known not to comply with the
standards above and therefore requires the use of a bi-directional S/PDIF to AES transformer.
1. AES & S/PDIF Digital In