The sound of 3D printers is mesmerising. Not so keen on the sound of kitchen blenders/grinders.

Diesel engines drive me up the damn wall

I like my clacky keyboard.

I also love the klangs of spaceships banging into shit in space games.

Old slow gas and steam engines where you can hear every click and pop. https://youtu.be/eChBqGajIyo

I love the sound of old harddrives. At least the ones that have some low grumbling and clicking, not the ones with a high-pitched whine due to failing bearings.

The sound of old tapedecks and reel-to-reels is also pretty nice.

And the sound a Zippo makes when you open and close it.

I love the clickity clack of old IBM Model M keyboards. Typewriters' typing sound is also oddly relaxing to me, the *ding* on a new line carry was lovely, too.

I can't say there are any machine noises I enjoy. If there was a way to have everything be silent I think that'd be great :3

Old hard drives, floppy disk drives, record players; anything that plays back physical media, apart from modern disk drives. Those hardly make any sounds at all.

I love the distinctive sound a regular fat PS3 makes; the fans sound pretty weird but I associate so many good memories with that sound.

I love the sound of plenty of older performance engines such as an RB25 or RB26, 2JZ, 13b, old Ferrari V8s like in the F40.

A lot of the newer performance engines with these fast shifting auto boxes just sound like wet farts and have "pops and bangs" programmed into the ECU just sound like shit to me.

I know a lot of people hate loud cars but these 90s / 00s performance engines literally throw chills up my spine ans bring a tear to my eye sometimes. Just pushes some visceral button inside me.

Industrial music is an actual thing, with many subgenres ranging from "literally just a washing machine whirring rhythmically" all the way to "EDM with banging noises".

Car wash. I could fall asleep to that

I wouldn't say that I enjoy it necessarily, but I heard an MRI machine recently for the first time and it makes the most bizarre collection of sometimes comically comouter-y sounds. People told me it would be loud but I didn't know what type of sounds I would be hearing lol.

I work in a place where machinery is always whirring and I don't find it particularly enjoyable. Our machines are more just sort of droning as opposed to something interesting.

At work we have a little thingy for digitizing 8mm/super8 film reels. It's kinda janky, doesn't actually play the reels at normal intended speeds or even at all really, in a sense. Rather, it takes a picture of each individual frame and then turns them into a video. I've been told by purists that this is far from ideal.

However!

The advancing film mechanism makes this incredibly satisfying rhythmic "ka chunk, ka chunk, ka chunk" noise that I reallllyyyyy enjoy. Check it out: https://loops.video/v/g53y-EtF-C

The 60hz hum that some things emit for some reason to do with AC

I like when my toaster pops to release the toast