Years ago, Mandolin Bros in Staten Island had an OM 12-string. It was sublime….just amazing. Lots of note separation and great clarity, less raw jangle than most, very manageable. It reminded me of Ralph Towner’s 12-string jumbo – it was similar to the sound in the link below.
It was more balanced and more controllable than a dread 12 in my opinion, but that’s IMHO, YMMV.