Hi all. First time poster but long time lurker here. I had an experience the other day the has really piqued my interest so, I'm hitting up as amny sources as possible to see what I can find out. A couple months back I obtained an old Edge Q4 and have been pretty happy with it. The other day I was in my local music store and noticed they had taken one in on consignment. It was a later model with the new "ducktail" headstock. Mine has the older "shrimp fork" head. I asked Tom if I could take a look at it. Well it was about 1 1/2 to 2 lbs. lighter than mine. Also the blend and master voulme pots were reversed. For comparison I went home and got mine. The newer body is much thinner overall and the horns are substantially different. When we cracked open the control cavity there was a huge difference. Mine has a big circuit board onto which all the electronics are soldered. This newer one had 4 separate pots and a postage stamp sized preamp attached to one of the cut/boost pots. Also the bridge saddles are a lot different. Attached are some pics of the differences. Mine is on the right. Anybody know when Dean made any of these changes? Or if one preamp desgn has an advantage over the other. BTW My serial # is D20020788. The newer one is E091959. Sorry if the pics are a lttle big but I wanted as much detail as possible. TIA.