So i've just been listening to some SR-225s and am impressed. My very, first headphones were SR-60s. I've owned SR-125s which I thought were an improvement over the 60s. Tried a pair of RS-2s and sold them quick. For some reason I just did not like them. Ended up with some RS-1s years ago. Very, nice headphone. At a meet I had a chance to hear HP-2s and SR- 200s. I would somehow find the money now ro buy either of these. There was something very, special about them.
So where do the HFs and PSs fit in to this picture.