4Pcs 40x20mm Speaker Isolation Feet Single-sided 3M Adhesives Speaker Spike Pads with Non-Slip Rubber Rings for Audio,Speakers, Subwoofers, Home Theater, Turntable DAC Feet Pad(Black Color)

I recently bought some new amplifiers, to make rear access easier and to increase airflow around the amps, I wanted additional space above the shelf, and between the amps. I searched for taller feet than what came stock, but about 20mm (3/4”) is where most top out. So I asked if these could be stacked and indeed they can. I bought two sets of four for each amp. This also required me to buy longer screws, but the feet easily accommodated the change. At first I even tried putting the manufacturer’s feet as a third set on the bottom amp (you can see the solid black puck on the very bottom in the second picture), but that made the top amp too high, so I decided on the original plan of two sets for each amp. I used 35mm (1 3/8”) screw lengths for stacking two pucks, and 50mm (2”) for three, my equipment required M4-0.7 machine screws, but you’ll want to match the size and thread for your gear should you decide to stack them. The included screws are stated to be (metric) M4-0.75 x 14mm, as they were too short for my purpose I didn’t try them. The feet work great and space my gear perfectly in the rack, this makes it easier to hookup the many cables in the rear (14 channels between the two amps), the extra space also allows for cooler running equipment which makes it last longer. I find these feet attractive, and an upgrade from the manufacturer’s original aluminum feet (though after I panted those black they also looked better). As it turned out, I probably could have gotten by with one layer of these feet, and the original feet pained back on the bottom, but my end result looks slightly better. So all in all I recommend these feet for single, double, and even triple height configuration. My personal (experienced) opinion is that feet of this type do not affect the sound quality of electronic equipment—like Amps, Receivers, CD/DVD players, etc. I also don’t think the small and fairly dense rubber ring is going to ‘decouple’ a subwoofer from the floor; the original feet or a specialty product like the (much more expensive) SVS SoundPath, will likely do a better job, but every situation and piece of kit is unique. This is an attractive, simple, well made product at a fair price.

Bought these to replace the feet of my active subwoofers. They look amazing, sturdy and of good quality. One reviewer mentioned the adhesive pads they come with are not double sided, however, these are supposed to be screwed in, not attached with adhesive. The pads that come with them are meant to produce some friction between the feet itself and the bottom of whatever you are screwing them to, therefore, the adhesive part faces the upper part of the foot. In my case, I had to get screws suited for wood, since the cabinets of my subs are made of MDF (Middle Density Fiberboard) and the screws they come for are for a different application that may or may not suit your needs. Since you can use these for a variety of applications, it is highly likely that you will have to get different screws. Also make sure they provide you with enough clearance for ventilation, etc. My subwoofers have down firing ports, so it was imperative to provide the same clearance from the bottom of the speaker to the floor as the original feet. For those that are not comfortable using metric, there are two sizes, both are 40mm in diameter which is roughly 1 9/16", and the heights are 15 and 20mm which is 9/16" and 3/4" respectively. I haven't had the need to do so, but I believe these are stackable, provided of course you use longer screws.

Like the look and functioned as expected. Used these on my tower speakers but the screws were too small for my speakers, they are M4 and I needed M6’s. Tried drilling the hole larger to accommodate M6 bolts I had laying around but the heads were too large to sit inset so I gave up and attempted to use the included tape but it’s one sided, odd? I used gorilla double sided tape and worked fine. I would suggest including two sided tape and a couple different size screws.

A great value. We are replacing the artificial stanchions on the tops and bottoms of the base's on speaker stands with these. These are the same OD so they fit perfectly. These are well made and add a touch of class to your components .Arrived quickly and were well packaged. The 4 bolts provided are random so you may not be able to use them. Very pleased with purchase

Great product to isolate floorstanding speakers with spikes and not damage the floor below. By lifting my speakers just a "smidge", it made a small but noticeable improvement in the detail in the bass region.

Look and work just as good as much higher priced ones

I purchase some of this feet in the past and the came well packaged in its box with screw and 3m double side tape. This time I received a used item with no screws or double side tape. Refer to the pictures. I do recommend this feet and it’s a great product. I had request a refund and new item to be send to me

Hubby is very happy. We haven tried it out enough on vibration reduction but functional and stable and thickness was great. It was easy to install

Great quality indeed

Good quality, solid construction and an excellent replacement for the rubbish feet on my Compact Disc player, DAC and Amp. They came with screws which were unsuitable for the job, but I had a pile of 3M pads that did the trick. Worth every penny.

They're cheap but I can't tell if they make a difference. At least the speakers sit off my timber floorboards.

Not the best, but works alright.

Work as expected for a good price, and feels to be well constructed