For $60 your getting the last 2% of the magic fomula that is SYNERGY. And when it clicks in and works its very cool isn't it. Think back to the first time you tried it three days ago-did you say out loud "this sounds great" or something similar??? I think I actually said "_uck yeah!!!".....LOL.
I think it's a bit more than 2%. I'll equate the leap being equivalent to some of the mods that we've all performed on the Grados. I think the only mod that gives back 2% is some Dynamat on the back of the magnet. The other mods usually have a much bigger gain on performance. However, I will agree with you on that word - SYNERGY. It's ironic that I'm not getting the Synergy with my Sennheiser HD-555s, but the Grados, I am. I thought my Sennheisers might also fare a bit better - but, they didn't. For me, that's not a biggie because they are my "going to sleep" headphones and I'm not going to use an amp in that environment - especially since I can fall asleep most times before the first song is over.