What about a product can irritate you?

The stock feet that came with my speakers were badly made. If I screwed them in with my bare hand they would slice up my thumb and fingers like a multiple blade razor. Beat that!

Speaking of cables.My Cardas IC's were connected on my ARC line stage for about 2 years.Man the day I tried to disconnect them,I nearly pulled the ARC female RCA's with it.What a TIGHT PERMANENT BOND that was.That was annoying.
George

Well, my current pet peeeve is speaker binding posts that are too close together. My speakers take banana plugs. The bananas on my speaker cable are WBT angled bananas. The angled banana is wonderful for stress relief and for cables that are a bit stiff. However, if the speaker posts are too close together, the angled bananas bump into each other and are difficult to insert. It's exacerbated by the fact that the speaker is bi-wired, so there are four of them crowding into the back of the speaker in the same small area.

I expect that people who use spades have all sorts of peeves about binding posts too.

Remote copntrols that don't work. I have a Sears $120 air conditioner beside my bed. I can point the remote at the opposite wall and the AC will respond properly, yet the 4 pound $500 wonder that came with my Wadia has to be pointed right at the CDP to work well. I had an Acurus preamp that would guess at what you wanted if it couldn't read the remote, often shifting the balance instead of the volume. As if we weren't worried about enough things already!