Easy to use and gives a nice lift.

Well built for the low cost.

As advertised, the rubber was harder than expected, and it's essentially just a rubber piece with a metal ring outside. You pay for the looks, but maybe any normal rubber chunk could do the same.

Well made and they do the job for a fraction of the cost.

They totally work! However, the issue is getting them under the subs. I have a Nakamichi sound bar with dual 8” subs and getting these placed is difficult. There is no adhesive to help them stay in place, I ended up using some double sided tape in order to get placement correct. But they ABSOLUTELY dampen the vibration and I can now turn the bass up.

They're sturdy, they're well packaged and well made. They work to isolate ground thumping as far as my non-audiophile ears can figure.Weird thing only being able to buy one set in a single order. I have two subs so I cheated this by making two separate orders within a minute of each other. Sorry sellers, but that's a stupid restriction.

I was confused when I bought these... thinking that they somehow attached to the bottom of the subwoofer.. but they simply are put on the floor, and then the subwoofer is placed on top of them. They DO work... as the neighbors below me are no longer complaining!

Sound isolation is critical for subs or even hi-fi speakers with big woofers. All that vibration effects your sound and if you play vinyl records, can really be a nuisance - if you've never heard low frequency rumble creating feedback through a phono cartridge, trust me it's awful.These are very simple, yet nicely made and they function as they should. While there's no adjustment (like you might want to level a turntable) these should also work well to isolate components from vibration, not just subwoofers from the floor. At $34 these are a pretty good buy, really. Audiophiles pay much more for products that are only slightly better. Sound Addicted has a great line of products - check them out!

These are surprisingly good isolators. I’m currently using them on a hefty Klipsch 15” sub, but eventually I’ll get my custom 18” setup built and tuned, then these will serve that house-shaker. Anyway, these are clean and everything I could have hoped for in sub feet. Pricey, but it makes sense once you hold them.

New computer case came with hard feet that alongside the power of the computer ended up being able to shake the whole desk while under high cpu loads that had fans past 50 percent. Acoustic isolation pads did a wonder of keeping vibrations isolated from the rest of the desk including any other free standing devices like other wireless chargers etc. Size of the pads helps them fit alongside the whole feet of the case and their the perfects quality of rubber to keep in place while also quieting the device itself from sitting against the hard wood desk. Over all extremely satisfied with these things, no complaints and pretty good value for how well they work!