It looks to me that the amp was damaged before shipping as the original packing foam was used so possibly this is phony damage claim scam. Send it back don't get involved in a damage claim!!! I didn't once and am sorry I kept the unit!!!
How Much Does Damage Affect Value?
I purchased a "mint" amp, cost roughly $1100. Well, packing was inadequate and the unit suffered corner damage on the faceplate during shipping. The damage is not a deal killer for me, but it is there. The unit was originally a 8/10, now I guess it would be a 6/10, though other than this blemish it is quite nice with next to no sign of wear. What would be a fair de-rate to the value?