Sire P7+ A4/BK alder 4-string active bass guitar blackTHE SIRE'S FIRST PJ BASS The idea of integration in Sire basses starts with the P7 being the first among the lines with P+J characteristics. Having the Marcus signature pickup set, this hybrid guitar is able to produce both distinct bass and classic jazz tones. MARCUS MILLER SUPER PJ REVOLUTION PICKUP A special combination of Marcus signature humbucker and single coil pickups allowing precise expressions of both the clear bass and jazz bass tones.