RME QUADMICII 4-Channel portable Mic Preamp. Merchandise and packaging MUST be in the same condition as when received. Alto Music reserves the right to refuse any return if it appears the item has been used. Software (if unsealed or registered). Harmonicas, Mouthpieces, Earbuds/Earphones/Headphones(if unsealed), or any item that may come in contact with the mouth, ears or nose. There are no warranties for the following items.