The Kenton MIDI Thru 12 is, in fact, the MIDI Thru box you've been looking for - especially if, like me, you had been fighting with inconsistent performance from various other generic 1-into-4 MIDI Thru boxes (not naming any names there, MIDI Solutions). It's compact, doesn't rely on inconsistently-present MIDI host supply current, has unchanging sub-millisecond latency, looks sharp in its brushed alumin[i]um enclosure, and gets MIDI messages from one place to twelve places, just like you need it to.