schecter diamond series blackjack 7-string. Schecter Blackjack SLS PT review. Schecter Guitar All technical aspects (neck, frets, tuners, floyd rose, sustainiac Blackjack c 1 fr revisão · Blackjack c. . All technical aspects (neck, frets, tuners, floyd rose, sustainiac+standard pup performance) and handling (balance, access) of this SLS are brilliant. schecter. All technical aspects (neck, frets, tuners, floyd rose, sustainiac+standard pup performance) and handling (balance, access) of this SLS are brilliant.