"Definitely knowing the right folks is the answer. I got an Ampeg endorsement a few years back because I knew the sales rep and just flat out asked him. Of course, all I got out of the deal was the ability to buy at the "artist" discount, which was 20% off the wholesale price they charge dealers. They told me that they only give the stuff for free if you can show some chart activity. That may have been aline of bull, but at least I got a $1500 bass rig for $600 new."
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Are you interested in the 7 Pro vs other micro amps, or just completely hung up on endorsements that don't matter in the grand scheme of things for most players?
Seriously, who cares? Take their opinion just like anyone else, then form your own opinion once you try out the product.

Hmmm, $1500 -20% = $600. How do you figure?