We are authorized dealer for many of the brands we carry. We also have other models of products, if you need, you can also send a message to us for consultation items at significant savings. Shop confidently with us. Please let us know. Screws, bass knobs, plastic coverings, protective films, etc. Physical damage: Item is scratched, torn, wet, burned, blown, signs of misuse, and faulty installation DEFECTIVE or non DEFECTIVE. Factory sealed items: If it’s opened and tampered except for certain items.