Thanks to recent fixes in the array data types in Csound 6, and to a fix by me in the signal flow graph opcodes outletv and inletv, array signals are now supported for the signal flow graph opcodes. Use ouletv to send a-rate and k-rate array signals, and inletv to receive a-rate and k-rate signals. I have only tested with a-rate but there is no reason k-rate will not work, although it will sum inlets.