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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
lynott
87 posts
 
Schumann Resonance Generators
Isotek Full System Enhancer and Rejuvenation Disc
Bags of lead shot on top of subwoofer
Herbie's Tenderfeet and Big Fat Dots

All of the above have provided worthwhile results for not a ton of money.
in_shore's avatar
in_shore
337 posts
 
I would say replacing the hyped over priced power cords and other cables replacing them with Signal Cable silver wire

,.As some know wire makes a notable difference however for others all it takes is a number of good reviews ,......Signal Cable , one of the very best deals in this hobby,.

slaw's avatar
slaw
5,785 posts
 
Making sure all of one's cables are isolated and not touching walls/floors.
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coach59
28 posts
 
My last tweak was the Synergistic Black Quantum fuse. It went in my Mystere ca21 pre amp and just made everything better. There is literally more of everything. And it's all the good stuff.
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