Xcortes,
one big issue with the ATR-102 is switching EQ's between NAB and IEC. unlike my Studer A820 which has toggles which allow easy switching between the 2 EQ's; you must either change to different cards or do a new setup to switch EQ's.
the best way to solve this problem is an outboard repro unit that included switchable EQ. two good choices are the Aria which Mike Spitz supplies, or the Bottlehead Repro which will mount in the lower panel. Mike Spitz can modify the panel and do all the set-up work for Doc to install the Repro.
if you need an RCA output; it will have to be at -10db (as opposed to the pro spec +4db stock XLR output)......and according to my research last year, the Aria is not compatable for a -10db output. the Bottlehead Repro OTOH, already has this.
another question would be; do you want the custom Repro unit to also function in recording? the Aria is more expensive when you have the input electronics also.
at some point when i can afford it; i'll likely have the Bottlehead installed in my ATR.
mikel