Kustom Sienna 65 Acoustic Guitar Combo AmpNotes Handle on the amp is a metal strap and not rubber, most likely the rubber cover fell off. works well A Kustom Sienna 65 Acoustic Guitar Combo 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 check out the pictures!