Yes, Fostex still makes them, but theyre not the same as my vintage one. I have the Fostex T20RP
I love it. Sounds good, but i dont know how good the new ones sound. I get different opinions from people,so until i hear them myself, i dont know.
They used to be really good though and Pro's used them, especially drummers and sound guys.
You dont have to use an amp, but they do improve with an amp, and you probably should use a good home amp with them, but they do work straight out of my portable players too if need be.
Theyre detailed and smooth and have some dynamics with the right amp. Can sound a bit thin on some sources, but great on others. Not for bassheads. Fast bass, not fat.