so i just got one of these
http://www.harmony-central.com/Newp/1999/Zefiro-InBox-large.jpg
I am now running at853s > battery box > ad-20 > d8
what would i all need to go from the battery box > ad-20 > d8, i did get some cables along with the ad-20 when i bought it
for the batt box to your ad-20 you need whatever the outs are on that (i presume male xlr) to the female xlr input of the ad-20. a simple short pair of XLR cables will do (male on one end female on the other). for the ad-20 to the d8 you need a mini > rca 75ohm calbe (its a mini to rca digital cable) run that into your 7 pin of your d8 and you are golden :-)
i got all this stuff
denecke/zefiro ad-20 with aftermarket knobs installed, attenuator cable and a 1/8" fem > dual male xlr cable
you will need that last cord to connect the batt box to the AD-20. What does the attenuator cable look like?
you will need the special cable for the AD-20 > d8 connection like jonny mentioned, or the toslink > 7pin cable
also, your mics.......never mind, I'll leave that alone