yeah, typo. late 80s to early 90s. not exactly sure when.
I wanted know everything there is to know about that EMB rack wah, basically who owned EMB
Matt Bacchi was EMB. He did it all out of his garage for awhile and then rented out some space in the bay area where he did most of his work. He also worked closely with ADA, also based in the bay area at the time, and had a big hand in the MP2 preamp and other gear that they came out with.
and how to get in touch with that guy?
A few buddies and I have been in touch with Matt and he does not want to be involved in music related stuff at all. He's really busy with other (non-music) work and family.
Also if I could still have one made for me
The only chance of that right now are if/when a clone is made. I'm working on it, based on the two that I have (Seen above).
and if Slash's was in anyway a one off.
From what I've been told and understand, they basically all were one offs. At least, customized to the buyer's wants. But essentially, slash's was the same as the rest (hammett too).
Also I would love to know where I can find a used one.
Search, search, search, search,search, search, search,search, search, search,search, search, search, and search...then when you are about to give up, search, search, search,search, search, search,search, search, search, some more. Seriously. It took me 9 years to find the two that I now own. One was from texas and the other from a touring pro in japan that changed his gear.
I do know of one other that a non famous individual (I know of like 10 EMBs total and most belong to Slash, Hammett, Vai, Santana, Schon, etc) owns but he isn't planning on selling it anytime soon.