Yes, it was the ESW9's.
I've had both versions of ESW9's. The first I bought from warehouse123 (online shop based in Hong Kong). They certainly did have an upper mid/treble bite so I ended up selling them. Examined the built quality very carefully just to make sure they were authentic - 99.9% certain they were
Wanting to see if I could find the version with the smoother sound, I ordered another pair direct from an eBay seller in Japan. I lucked out this time and have been enjoying them in the office ever since!
There were a few variables I noticed between the two different pairs, but difficult to say which was most important:
- The pair from Hong Kong were meant for the Chinese/HK market....DUH!
- The pair from Hong Kong had a later manufacturing date
- The pair from Hong Kong had a lighter, slightly redder finish
....all of this went down in Q2 2008.
BTW, I like the ESW9's much better amped fairly budget desktop rig at work but the amp tightens up the bass a good amount.