Eureka Boss
Yes, the Eureka boss upright in black, with fabric bag, and I believe no attachments, circa approximately 2000-2002 was just horrible...it was not high pitched, but instead just really, really loud. I think some people are more sensitive to certain tones than others too which may have something to do with it but in this case, I had to turn the thing off to talk to anyone while vacuuming as we couldn’t hear each other even when shouting over the thing. Maybe post a picture of yours and I’ll tell you if it’s the same one. I know apEureka used « the boss » name on several models so you may have a better not so loud version.
Jon