Has there been any inexpensive item that enhanced your system's sound?


For me it was an inexpensive power cord that was laying around for years, a Pangea AC9.  I have it connected to my Yamaha A S2000.  I've tried the stock cord on the Yamaha and then some of my other cords, (Wireworld, VH Flavor 4, Acronlink/Oyaide custom cord and a MAC). I've had lots of amps and integrated amps over the years, and this is the first time the Pangea contributed to making better sound. It surprised me because I had tossed it aside and forgot about it.  Power cord performance is such a crap-shoot and dependent on so many other variables in the audio chain.  Any inexpensive item you've come across that enhanced your system's sound? 
foster_9
knghifi , foster_9, and others who've replaced their outlets ... before switching out your old one did you first clean their contact areas and plug blades too and then listen? And only then replace with a different brand to compare? I sometimes wonder how many cable/wire/IC/outlet swappers are comparing old dirty/oxidized contacts with new clean contacts vs. finding a better sounding piece. 
rockadanny936 posts05-04-2016 2:54pmknghifi , foster_9, and others who've replaced their outlets ... before switching out your old one did you first clean their contact areas and plug blades too and then listen? And only then replace with a different brand to compare? I sometimes wonder how many cable/wire/IC/outlet swappers are comparing old dirty/oxidized contacts with new clean contacts vs. finding a better sounding piece.

No I didn't clean ...  My house is new construction and builder grade outlets are in housings so clean and has not oxidized.
bdp24...I trust you had some not so kind words for that clerk...or, shall we be kind and say 'cluck'?

When I read that, if in your shoes, that gov't. drone would still be picking his/her/it's mental shards off the wall behind him/her/it.  Whatta rude SOB!

My knee-jerk reaction would have been (after taking a deep breath)...

"Not so elderly as to recognize a mental midget when I meet one."

Comments like that deserve all the 'tactful vitriol' you can pack into English without resorting to 4 letter expletives.  I'm still in admiration of the wordsmiths of the past, who could verbally drag an idiot through a mental keyhole and back again without resorting to merely crude epithets or single finger gestures as is too typical these days...

But, I digress...*sigh*  It happens a lot of late... ;)

If I was where you is, I'd go get some script and enjoy.  Tell the MD you're allergic to civilization....that's my malady. *G*

Last time I was in CA, I read a reporter's story of acquiring the appropo credentials...his prepared story of symptoms, blah blah, etc.  The doc blinked and said:

"I'm a gynecologist.  Here's your prescription."

You can thank me @ your convenience. *S* ;)
I replaced an ikea shelf that now holds the records with a more audiophiley one I found on CL. Didn't even think it would make a difference but it did. Really helped with a more airy soundstage. 
Well I will say, room acoustics. You'll be surprised to realize how good the improvement without changing any gears. Of course, the position of speakers plays a big part as well. :)