Last week I want to see Sharon Jones and the Dap Kings (a must see if you like old-school soul, www.daptonerecords.com), and the bass player (Bosco Man) was using an old Carvin SB40 into an Ampeg SVT. He had really huge and deep bass tone, almost like a dub-type tone. I though it sounded great. Does anyone have any experience with these old Carvins? Do SB's ever come up for sale? Do they have a "vintage" price tag or are they cheap? I've seen LB50's come up on the bay before, are they anything like the SB's? I read on the Carvin Museum web site that the SB's used Hofner necks, that must add to the tone somewhat. Please share you experiences with these basses.