My featherweight is very quiet. Also a great machine for piecing, a real straight stitch that the newer machines just can't do.

My treadle is the quietest (of course, no electric noise).....my 1919Singer 128 (in the picture) is also very quite..........I also found that if I put the speed lever at about 50% on my Bernina, it is much quieter than it is when I am sewing full speed.I have nights when I dont sleep, and I sew............what a fun way to spend a night awake........

Babylock espire is really quiet, not very loud compared to my others

A 301 or 301A or a Featherweight - they are all a pleasure to sew with. You can find them for 100-200 dollars on ebay or at goodwill sometimes.

My Singer 301 is quieter then my Bernina 1260 and it purrs. A quild member has an old Singer newer then the 301 but still vintage, kinda green color, and it runs so quiet you have to go check if it is actually running. It's the quietest machine I have ever heard. I would certainly check out older Singers for sleep sewing.

duplicate post. I am getting a lot of duplicates showing up lately. ??

Our quietest machine is a Singer 15 clone. It just hums.

Darren

I think the sound generating machine is the best idea. Had one for years for my husband. Wish I could have found something for me to cancel out his snoring! Now these machines come with many sounds, but be aware the sounds of the ocean or waterfall tend to send men with prostate issues to the bathroom!

My newer (plastic, computerized) Pfaff is much quieter than my vintage all-metal Kenmore, and both are kept well oiled. That's all I have for comparison. Never had any of the others mentioned.
Thanks for posting this thread, though. I was wondering about this. I'll be taking a portable Kenmore on a trip and have been thinking it may be too noisy to use at odd hours with others sleeping nearby.

You learn something new every day...here is my new fact for today, a "white noise generator". Never heard of such a thing before. Who knew?