AudioQuest JitterBugPrice: $49

Website: www.audioquest.com

Pete said: In a hobby in which chasing down even marginal sonic gains while avoiding deleterious tradeoffs can cost hundreds, thousands, even tens of thousands of dollars, a $49 device -- or, better yet, a $98 pair of them -- that can effect varying degrees of audible improvement is a no-brainer.

Read the SoundStage! Hi-Fi review.

The gist: For a mere $49, it’s worth a try.