Ads for Stereo Equipment Sure Got Weirdly Sexist and NSFW Back in the ’70s

Revisiting classics like 'Great Knobs'

Companies got away with some pretty racy advertising in the '70s—the cocaine paraphernalia ads uncovered earlier this month certainly showed that—and, as it turns out, selling stereo equipment could be just as ribald. 

Dangerous Minds dug up several ads (some of which are NSFW) that were likely featured in National Lampoon and men's magazines, and each one seems more sexual than the last. Apparently, selling stereo equipment meant you had to appreciate, and use, every breast pun or group-sex reference you could think of.

Check out some of the ads below: