Sony MDR 7506.
The thing is, is I have always had this issue with any headphones, even for just casual listening my entire adult life. I was trying to do "mixing" with earbuds, because you don't have to worry about having a pin head with earbuds;) For the same reason, I like listening to tunes through earbuds. So I've been taking an elastic strap and putting it around my head and headphones, therefor pressing the earpieces against my head harder. The sound difference is significant, even to my untrained ear. No, this is not an April Fools day joke...LOL! Also, I have read that people who have started listening to music through non bass enhancing headphones complain of a "tinny" sound....so perhaps I'm hearing the sound correctly if I don't have the earpieces pressed against my head with a strap?
Any headphones I have ever worn feel wobbly and unsecured against my head....so I don't even know if that is a normal sensation or not.
I thank you for your response, and any further responses ahead of time:)
This is still a very relevant program, especially with the recent quarantine developments globally.
Here's a little something from Tom's Hardware that I saw had been aggregated by SO earlier today: