Hartke VX3500 4x10 with HA7000 Amp Head InstalledNotes Amp head is a Hartke HA7000 appears that this head is not original to the cabinet but an upgraded model over standard. A Hartke VX3500 4x10 with HA7000 Amp Head Installed in Very Good condition! At Evolution Music, we attempt to highlight cosmetic defects (if any) by picturing every angle of every piece of gear so you know exactly what you are getting. We always picture any and all accessories too. What you see is what you will get so please