P tone for six strings?

Hello Sheldon, I'm looking at a ABZ 6 string 3x at Bass Central. The ad says there is a P tone in the neck position. Is this now a possibility for six strings? I haven't contacted Bass Central yet, but I'll be checking in with them about this bass if the P tone is a reality for six strings. Also, is there a passive mode and tone control on the three band Glock pre? Thanks!