The MIDI Solutions Event Processor only has MIDI in and MIDI out (5-pin DIN). It doesn’t require IOS and is programmed from a computer (Mac or PC) with MIDI interface using the Midi Solutions Programming Software: http://www.midisolutions.com/progtool.htm
Thank you appreciate the info
I’m tying a BB and a VL3 together with an Android tablet running BandHelper (subscription version of SetlistHelper). So far, it looks good, but I’ve only just started. Got the tablet sending MIDI to the VL3 via the MIDI-merge output mode on the BB. Have not tried sending to the BB on channel 2 yet, but see no reason to doubt. It also looks like the BB is sending MIDI sync to the VL3, but I’ve not verified it yet.