No. Most of these predate 1972 (when Dolby started becoming available on pre-recorded reels). The three decks I have aren’t Dolby equipped, either (this Akai GX-365D, 1971; a Panasonic RS-736, also 1971; and a Magnecord 1024 from 1965, which was a radio station-grade/semi-pro machine that sounds better than the other two anyway…even with its controls being “more primitive”).
I don’t find any real problem not having NR at 7 1/2ips, honestly. I did a tear-down of all my own stuff and hot-rodded the Akai, for example, with: 1% metal film resistors; aftermarket NOS Nortronics 1/4-track heads (never cared for the sound of glass surface ones); new Central Semiconductor “2SC1815” AF line transistors; and Nichicon “Black Gate” caps. The deck is operating now in a category far beyond what the stock specs were (it can record a sinewave signal from 11Hz-22,000).
The miking of the audience was awful and sounds like they were behind a wall, with no “you-are-there” feel whatsoever, but: Moony’s kit and Ox’s bass are left dynamically intact here a lot more than on other vintage formats.
