Hi Wayne, I don't know much about the products except that I have never read anything negative about them, only very positive comments. Mr. Wright did the design for the 4play Bottlehead preamp. I have a 4play and it sounds nice, but I beleive I could do better. I've read Wright Sound premaps are much clearer and are very linear; so, I'm looking for a little feedback from fellow audio nuts about their preamp products.http://www.wright-sound.com/