Well Jauqo, My assumption would be(Yes I know about assuming

) that companies such as Loud/Ampeg that offer a player an "Endorsing Artist" platform would not only keep the EA fully functioning equipment(above mass produced quality) but aalso keep them as content as possible in the EA contract. I don't believe Mr. Sheehan has any personal concern for Loud/Ampeg's current quality.
Although I'm not an EA for any company and I know you have several you represent, I do have what I believe to be a decent amount of common sense(I hope). My common sense tells me that Loud is generating revenue on Sheehan's representation and Sheehan has had benefit. And it'd be uncommon yet not impossible for Mr Sheehan to take the moral stance of ending his EA contract simply due to poor quality output to the general public by Loud.
Maybe you can share some insight for guys like me who aren't EA's as far as the inner workings of an EA relationship.
Just my opinion.
God Bless, Ray