I bought an C325BEE in a classified sale and the amp was shipped from CA to MD by USPS priority. I just opened the package today and found that the seller only put some packaging “peanuts” in the box which do not provide enough protection. When the box was opened, one corner of the amp was in direct touch with the box without any foams in between. One corner was slightly cracked, see the picture.
I have listened to it for a while and it seems fine sound wise, but I am a little paranoid. I don't have a good amp to compare it with. I am wondering what could go wrong with the amp and if I can do some simple check to make sure it is OK.
I know nothing about the build and technology of amps, so please give me some suggestions. Thanks