Well here is something odd, it's well known how much I "love" the SR-009 and I recently picked up a used one in Japan as a part of a larger bundle. I was just going to move it on as I already had one in my collection so after putting it off for a while, I sat down to test it in my main rig just to make sure it was ok. Now here is the odd part... this one sounds nothing like the other eight SR-009's I've had here over the years. It has a slight forward tilt to it but far better than any 009. It lacks that artificial "boxing in" of voices or the excessive brightness superimposed on everything. I dare to say they are pretty smooth and with proper bass response too.
Thinking I was going nuts I grabbed the other set from my collection (which sounds like all the other 009's) and did a double blind test. I had my better half pick songs and hand me either of the two sets (plugged into the same Carbon CC) and this wasn't even close. With the regular 009, just the opening of a song was enough to give them away. That same feeling as with Tyll reviewing the Ultrasone ED10 if anybody remembers that...
Now this set is never leaving my collection but why is it like this? It's not a super early one or a late one, I've had both (plus everything in the middle) and they all sound the same. In fact the other set I have here is one of the last ever made and it sounds the same as the very first set I got back in 2011. This set is in the SZ9-1200 range so this has to be a QC issue or something like that. I don't know the history of the set but no mention of it ever being serviced. Earpads feel like new and the whole set feels like new so yeah... not sure what is going on.
I first tried tried them on Friday and I've probably logged 10 hours on them by now which is pretty unheard of for me with 009's. Hell, I had to force myself to try the Purrin Rock set which just arrived (those are weird) and now I'm back on the 009's.