Mark II
from 1977 · ¼″ 2-channel (II-2) · ½″ 4-channel (II-4). Dashed cards are wanted.
0 documents held, 2 wanted.
The factory maintenance manual the Mark II shares with the QXD and the 8SD — its title page reads "MODELS MX-5050 MKII-2, QXD, MKII-4 AND 8SD". No scan of it is online. If you hold a copy, this is the single most useful document the site does not have.
That claim has been tested rather than assumed. A search in September 2026 across the manual aggregators, the Internet Archive, hobbyist archives, forum threads, document-sharing hosts and the paper and reprint sellers turned up 182 candidate documents and not one page of this book. What it did turn up is the first-generation pair on the QXD shelf, which name two of the same machines on their covers and are a different book entirely.
Wanted — not yet held. Have one? See how to contribute.
Otari's own brochure or spec sheet for the Mark II-2 and II-4. The January 1978 db line-up ad is the only period print of the machine on this site so far.
Wanted — not yet held. Have one? See how to contribute.