Line 6 Spider Valve 112 Tube Modeling Amp AS ISNotes Control pots feel pretty loose to the touch all are functional but it feels like very loose knobs in spite of knobs being properly tightened General wear and tear to cabinet tolex Fully functional A Line 6 Spider Valve 112 Tube Modeling Amp AS IS in Fair 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