Hi there Ted! I’m the lucky owner of this desk, and as per the initial posters plans, am looking to add direct outs to the board.. It looks in wonderful condition! Thankfully, did the same to an old Sony broadcast desk a while back so am not quite going into the process in complete ignorance, but wondered if you had any thoughts on where might be the best place to tap the signal post EQ/prefade, & any other considerations were i to impedance balance the ouputs? The circuit boards themselves are marked as APC 210/1078, ACM 2/4/8302, and am happy to provide pictures if that helps.. Thanks for crafting such wonderful audio equipment over the years!