Sony - MDR-V700DJ

Sony MDRv700 are still the best in my opinion

My experience is a long, drawn out scenario, where people kept telling me my Sony MDR-V700's shouldn't need more than phone power because they're so efficient, but also that they were lacking in midrange and were bass-heavy. I had tried them on progressively higher wattage amplifiers and found they sound better with more power (they have a 3,000 milliwatt power handling). After taking them to CanJam and trying them on various amplifiers, I found I enjoyed them on a Schiit Magni 3, and preferred them over the various Senn HD's they had for comparison. Despite being on-ear (i prefer around ear), they have great sound, and i used to be able to locate people trying to sneak up on me in Counter-Strike from around corners and such. They hit very low bass notes, which us likely why people thought they were bass-heavy or muddy, when run on improper amplification. I haven't been able to let them go despite using other headphones these days, because they just sound so darn good. The main gripe people had with comfort was the headband squeezing hard enough to give you a headache (true story), but it turned out you can bend them in the opposite direction, enough to loosen the squeeze, and it made mine very comfy.

They were the pinnacle. Absolute classic.