hi rikki, thanks for your thoughts, as long as they use "wall warts" and not internal power supplies, no problem...yeah i know they are pretty old(although i think the wk2 is newer) but the marriage with the s90es may get around some of the sounds issues, i don't really know at this stage, its more a "suck it and see" exercise.... but i am finding that eventhough it sounds good, OMB is way to fiddly and a bit "clumsy" to use live...
cheers
dennis