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
Adding this WAudio W-3900 power conditioner to the list. It cost very little by audiophile standards, but it really does a fantastic job in my setup with a Maestro Outlet> W-3900 (using stock power cord as a baseline)>Silver Audio Wattmaster PC>PS Audio Nuwave DAC. Available at Amazon (Prime).

$4 foam bass traps and a $17 bottle of Stranahan’s Colorado single malt.Anyone else using Glencairn whisky glasses? They enhance the depth and widen the stage of the olfactory experience.So we have sound, sight, smell, taste and some tactile impact.That’s as much as I care to imagine. You’re on your own.
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Stevecham, thanks.
My first order of 16 is sitting on top
of components and plugs.
Terrific value, and free shipping on 
Fridays?
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These are amazing and highly effective! I use three under all my components. The best value in vibration control, and they look good!

$26.40 for a box of 48!

https://www.supplyhouse.com/DiversiTech-MP-2E-EVA-Anti-Vibration-Pad-2-x-2-x-7-8
Hockey pucks.  OK, I don't know that they actually have any impact on sound quality, but due to space limitations, I have to stack some components in my bedroom and it helps give some breathing room between them, hopefully it will help prevent an early death from heat.
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Freezing things in the home freezer. CDs, LPs, Blu Ray, CD players, headphones, cables, power cords, what have you.
Like Elizabeth: Retired

My Reed Sound Level/Pressure Meter. Really helped set up my speakers to best possible position and rearrange furniture to reduce standing wave reflections.

For goeff: Quit flying Immelmans as it disturbs vestibular perception.
I fastened spruce boards on top of metal speaker stands cut to the size of the speaker bottoms.Sounds so much better when they are supported firmly.Cost$0.00
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Carpet/Rug in-front of the speakers placed to catch and absorb floor reflection.  #10 on the Wow Factor.
Adding a dedicated 20 amp line just for the music. Everywhere I've lived it's one of the first things I do. 
Removing all magazines, newspapers and books from the abode, especially telephone books, and relegating them to the trash. I’m not hot doggin’ ya. 🌭
Cheapest was removing the cover from my phono preamp. Opened up the sound almost metaphorically. Refitting the lid closed in the sound. And never play records with a lid on your turntable especially closed. 

Dedicated 20 amp dedicated circuit with a Porter Port. Speaker stands made by Resonant Woods. Large Oriental rug. The rug made the biggest difference followed by the speaker stands and then the outlet. I'm going to see if a new component stand made by Resonant Woods makes a difference but not until 2020. I'm picking up my 2019 purchase on Saturday and I'm done for the year. 
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Resurrecting an old thread: 

The inexpensive JW Audio Cryo Nova speaker cables I've had for years and tried again have definitely improved the sound of my Klipsch speakers. 
Funny acastos! I have tried most of the power cords I own on the Yamaha integrated. Thought the inexpensive Pangea sounded good. In the end, the sound of my speakers became veiled, lacked transparency and a sense of air in the music. I am shocked that the cheap iron lung jellyfish solved all of that. After years of owning audio systems, I learned some things that work are unexpected and there is no accounting for them. Synergy can sometimes surprise you.
In a few months, put that Pangea back on the Yamaha, and hey presto! another cheap - actually, free! - tweak.

I replaced the Pangea power cord that I praised earlier in this thread connected to my Yamaha integrated and connected another budget cord that I’ve owned for years, the iron lung jellyfish (a hospital grade cord). This cord made a huge difference to the liveliness, bass, prat, and detail of my speakers. Glad I pulled out this forgotten budget power cord.
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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Making sure all of one's cables are isolated and not touching walls/floors.
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,.

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.
Tightening your speaker driver screws.
Spending time positioning your speakers.
Original Magic Eraser for your stylus every now and then.
Zerodust stylus cleaner.
A correctly measured for height, Herbies washer under your lps.
Machina Dynamica springs between your support structure and your favorite platform for any of your electronics.
I've also found the Maestro outlets superior to the Porter Ports.
Cleaning your electrical contacts.

Having my vintage JMW tone arm and junction box rewired with Nordost Valhalla 2. The cost for labor, wire and return shipping from VPI? $150. The improvement over the original Discovery wire? Phenomenal. I laughed out loud.
Ayre Irrational but Efficacious! CD. I just got it today and ran it through my system and though I don't know what the heck it does, it does it very, very well.

If you decide to get a copy, go with Elusive Disc as they have the best price and lowest shipping costs. 

All the best,
Nonoise
In the late 90’s I purchased a Naim Wiremold power strip for $60.00. 9 heavy duty outlets wired in series connected by a busbar. Solid aluminum case. No lights, no fuses, no off/on button. Basically all power, no filter and a heavy duty captive grounded power cord.

Approved by and endorsed by Naim Audio to be sold by Naim Audio distributors to be used with Naim gear. Non current limiting. Instructions were to plug the highest current draw closest to the power cord and work your way back through your system to the least. Amp, Preamp, CD, Dac....... best $60 bucks ever.

They went out of sight for a gew years but AV Options.com carries newer higher performance versions along with Cryogenic properties. Additional power Cords can be purchased as well.

If interested, Google Stereophile.com and search Naim Wiremold.

N
Thanks Meerzistar.  I think replacing is the best thing as you are really suggesting I think.  I did use Deoxit on all my AC cable connectors and that was a big help.  But I have so far not tried to clean the wall socket receptacles.  And listening to what you say I won't now.  Trouble is I can't replace my receptacles in my rental apartment, so doing this may have to wait.
A lot of great feedback here. For me, the best "inexpensive" tweak that I made was buying Solid Tech Feet of Silence. They were recommended to me by a high end audio dealer who actually didn't carry them. He said they will have virtually the same performance characteristics no matter what surface I place them on. He was right- and the vibration reduction markedly improved the soundstage in my system. The better news was I was able to keep the rack I was using which I find aesthetically pleasing (high WAF) and fit my application well. So, I feel like I have the best of both worlds. 

Absolutely consider smartly placed room treatments. Even "free" ones can make a significant difference. Draping a thin tapestry over my flat screen behind my system cleaned up the musical presentation dramatically! $29! As someone wrote earlier, pay attention to first-reflection points. 

Power conditioner (the right power conditioner) and power cords also made a significant impact on my system. However, I would classify them as inexpensive tweaks. 

And don't forget why started down this path in the first place... for the love of music. Cheers!

agriculturist84 posts05-13-2016 5:48pm"How best do you clean an AC outlet?"

Deoxit and a pipe cleaner might work inside the receptacles. I highly recommend unhooking it first, or pulling corresponding fuse. Be sure nothing gets left behind that can cause an internal arc. Otherwise the 4th of July may come a little early. I would just replace it for some cheap insurance. Unless its one of those $100,000 units. 

I discovered another inexpensive trick. Dynamat-ing the internal sides of source covers. Avoid blocking vents. I can see some potential for improvement there.  
Good mention on keeping switches clean. Even before crackles rear there ugly sound and become obvious some maintenance is a good idea. I bet they hinder sq even before the crackling starts, to a certain degree. Clean and lube is a good idea too, to shorten intervals.

Has anyone realized a sonic improvement with those line pillars, hmm? I apologize the correct term for them is not on file, but they keep your lines from touching ground by suspending them a couple inches off the floor. Few search attempts lead me back here http://www.amazon.com/Holdup-Contractor-Suspenders-Patented-No-slip%C2%AE/dp/B0060KRJG2

I can see different types of flooring holding a certain amount of moisture and being a good conductor of electricity. Even dry flooring holding charges of static electricity. And depending on seasonal changes. Just a thought.

It imagine it wouldn’t be difficult to fashion some up to avoid paying large chunks of money for them.

I might have to do some experimenting. A little guidance never hurts http://www.school-for-champions.com/science/static_materials.htm#.VzX9mdQrKLp

The question up top has me curious. Because I’ve witnessed first hand what different types of interference can do, subtle or seemingly non existent before hand.

Foster yes they are great. Now if I can only find a few more deeply discounted. They have countless applications. Unless you have a good surface planer in your garage the BOOS boards are a good way to go.
meerzistar, I also use the boos butcher blocks under several of my components and have used herbies tenderfeet underneath those..