The iDR0 has been mentioned several times as the thing you need when you want to have two surfaces, but really the iDR16 would in most cases be a far better investment, as with it’s in and outs it is in itself a complete 16/8 mixing solution that can be controlled form either an iLive surface, PC with editor or iPad or all of those simultaneously and WHILE being used to facilitate said monitor split.
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Jonas Rose Høeg
http://www.lydfolket.dk
T112/iDR48