That's not an SB900, it's an SB II elite. The difference is in the neck profile, the string spacing, the inlays and the gold hardware, the electronics are the same though, and they do look similar so the confusion is understandable, Aria built the elites and the SB-R with a more familiar feeling neck in a bid to conquer America I think. I'm sure someone knows more than me. Was it sold to you as an SB-900?