Here's my take on the EJ tone, which I've battled with myself for a while now. My very first introduction to Eric Johnson was his '88 ACL performance which still stands as his greatest tone ever IMO. Every track has incredible tone and also his playing was in tip top form in this era. He sounded more ORIGINAL which is odd because most people evolve away from their influences as their career moves on. Eric strives for more of that Cream Clapton and early Hendrix fuzzed out tone a lot these days as opposed to the incredible violin tone of the '80s.
I love his current tone just as much now, it's just different. Less reverb, less echo, less volume....you know, the things people were asking of him for 20 years! Now that he changed it everyone wants him to change back! I've heard so many people hear his old stuff and automatically say, "man too much reverb and echo, but great player". Now they say his current tone is "dull, flabby, and sterile compared to his old tone". I think Eric should use the Lebron James technique of "What should I do?"
The facts are Eric couldn't sound like he did back then even with the same gear. He's changed dramatically in style and chops over the years. He's mellowed some and takes less chances, also he's refined his technique to the point of perhaps extinguishing that fire he had early on. He's not a lesser player by any stretch, he's still #1 in my book. Best guitarist alive. My last observational opinion about his tone is that his lead tone has gotten a little worse and his dirty rhythm/fuzz tone has gotten better. This is all IMO of course, I suck majorly in playing and tone compared to him.
'67 and '74 Fender Twin Reverbs, '74 Marshall 1987 lead mkII, Metro Superlead 100. Pedals from TC Electronic, Ibanez, Dunlop, BK Butler, Electro-Harmonix, Fulltone, Maestro/Gibson, Loopmaster switching, VoodooLab, Boss. Gibson and Fender guitars, Dimarzio pickups.