Thank you for all the responses.
I have been making some changes to my system that made it much more resolving with a much quieter background. This is when this "echo" effect became really noticeable. I hear this on some of my best sounding records, some old but others are new releases from the original master tapes (I guess thats' the keyword :)) where a lot of attention to details is applied. My main concern really was if there is something wrong in my turntable set up, especially because it seems it happens around one revolution early. But it does not seem that is the case.
I have been making some changes to my system that made it much more resolving with a much quieter background. This is when this "echo" effect became really noticeable. I hear this on some of my best sounding records, some old but others are new releases from the original master tapes (I guess thats' the keyword :)) where a lot of attention to details is applied. My main concern really was if there is something wrong in my turntable set up, especially because it seems it happens around one revolution early. But it does not seem that is the case.