I was looking around for an SB80 and a used Shen came up on Craiglist. The ad said that it was an SB100 but I really thought it was an SB90 because it is blonde. It was about three hours from me and it the price was right. I got there yesterday and bass was in great shape. I looked at the label and it was indeed and SB100. The action is very low and it will need some set up...but my buddy is a retired violin maker and he is going to come over and fit a new bridge and plane the fingerboard if necessary and reset the soundpost. This it my first bass and I am very excited! I ordered a new set of D'Addario Helicore Hybrids I am very excited!. I primarily play Bluegrass and this should be a good bass my needs.