Sound output has been confirmed. There are 2-3 small dents, but it's in relatively clean condition and doesn't affect use. There is no warranty, but it was purchased new from the YAMAHA authorized dealer in Yotsubashi, Osaka. The original case has straps attached for carrying, so there are several screw holes. This does not affect use. If there are any other areas you're concerned about, I can add photos, so please ask. This is a used item, so there may be some minor scratches. Please refrain from purchasing if you are sensitive to this. I am considering a price reduction, although I'm not sure if I can meet your expectations. Please feel free to ask any questions.