i have just upgraded to the ua apollo. it has no midi. my previous digi003 had midi. I need a midi device/interface i can plug 5/6 midi devices into, to send and receive midi, through the same channel. ideally i need a rack mountable one. preferable, but not essential. i need to have each channel to be input and output, so i don't have to have 2 midi cables running from the synth. i've noticed the older midi interfaces often have 8 ins then 8 outs. nightmare. on the digi003 the channels were both ins and outs. any recommendations? midi is so simple, its crazy some of the prices of some gear for simple midi. are there any cheap small devices?