Preffair Audiophile Speaker Isolation Spikes Aluminum Record Player Shock Absorber Speaker Floor Protector Mat Adjustable Subwoofer Anti Vibration Pads Non-Slip LP Vinyl Record Player Base

Could not get a satisfactory tuning of my subs to the rest of my 5.1 system. I suspected sub was coupling to the floor. Isolation spikes did what they were supposed to do, now have great clean sub base. Before I had to reduce the sub volume by 9db. When I installed the Isolation Spikes, I had to increase the sub volume, which brought the entire surround system into balance. Absolutely wonderful. Now base frequencies are clear distinct and accurate and properly aligned with my main speakers. They are well made and worth there price.Note to negative reviewers: trying to mount them under the already installed feet will not work, I tried that, and will will make your devices unstable. It even moved tore the rubber pads from the isolation device. Remove the feet from your sub/turntable/speakers, and mount the isolators to the FLAT surface of those devices. Forces from my sub where such that it rotated the sub. Now with the isolators the sub stays in place. All in my first review are still valid.

Tighter bass that blends better into the main speakers. These feet eliminated virtually all the local vibrations and made songs feel more precise and... spacious even. Spacing the feet and balancing the subwoofer on them is definitely trial and error, moving the sub once set is a loathsome exercise.Overall a very effective and affordable alternative to the more expensive options out there. Would buy again.

Easy to install and was exactly what I needed to level the turntable

I wanted to elevate some tube amplifiers to get more air underneath them and these did the trick. Was not expecting any difference in sound quality and can’t say that I’ve heard any difference. I could’ve used a solid rubber footer but to be honest, these look pretty cool so that’s that!

They are well made but are much smaller than expected. They also do not have much vertical range of adjustment. 1/4" of an inch max.I'm using this to level my turntable. But wound up needing to use cardboard anyway. Additionally, they are not large enough in diameter to fit my turntable's feet. I had to take extra care to "center" them. They are working, but this is NOT a final solution. I have a small vintage CD player coming back from refurbishment. I'll likely use it for that once I find a better solution for my turntable.

These are great for isolating your turntable from the cabinet, table or shelf on which it is stored. I was having some serious feedback when my turntable was placed directly on my credensa. I searched and found that using a butcher block and isolation feet are the remedy. I put these solid pointed style feet on the lowest tier closest to the credensa below the butcher block. Next tier, above the butcher block, between the turntable, I have spring style feet for added absorption. This combination allows me to play my music louder, with increased bass, and I have no feedback, no skating , just good tunes.

I think it made a change in my audio system, my audio has surprisingly better sound details.I've studied audio vibrations to some degree.and i have made a trial order from amazon, to test different theories about vibration, and it works better than expected, I don't know what to say but I recommend

I bought the black ones with the brass spikes and they were a great fix for my vibration issues. There was one place on the floor near my turntable that shook the hutch enough for the stylus to skip...installed these and no more issues. Was also convenient for doing some fine leveling. Both sides of these particular ones on this listing have rubber padding. I put some plexi down underneeth to protect my hutch's finish long term.

Not good for subwoofers mine fell off the feet. Stopped cheating out and bought isoacoustics which fit my sub.

I purchased 2 boxes of 4. I wanted to see if these were a cheaper alternative to Isopuck was worth it. I opened the box and each unit is made up of two parts, which are not connected together, you just let the top part sit on the bottom part. Keeping them horizontally level was very delicate. I could see no ability to isolate any vibration. I am returning them and going back to the good, but over-priced, Isopucks. If I am missing something, please let me know. They are so much more economical than Isopuck.