KossPortable Replacement Cushions,Black

They fit perfectly and were easy to install.

I use these to replace Sennheiser PX-100 headphone ear pads which are no longer available. These sound better than other generic headphone pads because others are too thick. To make them sound even closer to the original Sennheiser pads, I cut a circular hole in the middle (about 1 inch in diameter).

Great replacement filters.

Initially I was planning to order some generic replacement cushions from here on Amazon partly because I did not know what size my headphones needed. The others were larger and would probably have require less stretching to get them on the headphones.I went with these as they are the replacements that KOSS says fits my model of headphones.They DO fit but I had to really take my time putting them on as they needed to stretch quite a bit before they were on properly.The generic set cushions I was considering are 64MM and these are 48mm on the outside diameter.As with most replacement ear cushions (even if they are from the same brand as the headphones themselves) they are thinner than the original ear cushions. However, they do what they are made to do which is to be more comfortable than having the headphones on your ears without padding.I give these 4 rather than 5 stars because they could be a little bigger so you don;t have to stretch them out quite so much to get them on.

I got the Koss PortaPro headphones when they were new, I think it was 1998. They're a really nice set of phones, BTW. Not studio monitors, but I worked in a boring lab job, and needed quality sound. Those delivered.That is, until, about 8 or 9 years later when the foam started disintegrating. I saw rotten black poly in my kid's ears when he borrowed them.These pads fit perfectly. They have been in place for almost 4 years now, and they have not disintegrated.I'm speaking directly to performance and longevity, now:A single set of these pads has been in place for almost 4 years, and has not started to break down.Granted, I use these in climate-controlled conditions only... but they're lasting so long, I don't even know where the package is.And the sound quality has not deteriorated in the least since this replacement. If anything, they restored the balance that was lost when the old pads degraded.I have and will continue to recommend these to friends._____________Update 2018:I just bought a new pack of these.I only used 4 of the first 6. My kid tore one, I lost another.The 4 that I used lasted almost 9 years. The second pair disintegrated almost completely after about 4.5 years of storage and 4 years of use.I consider that to be outstanding construction.However, I can also say that I would prefer a slightly lower-priced 4 pack of these, because I think that 9 years from now, I'm gonna have two pads left that I can't find, or are stiff from age without eve being used. Plus my kids grew up over the intervening time.

perfect fit for my bigscreen beyond

Good

Did not fit