AB International Precedent Series 900 Power AmpNotes This listing is being sold as is Amp turns on but was not tested as we didn't have barewire for the bare wire connections A AB International Precedent Series 900 Power Amp 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