This was the second of these I had purchased. The first was from a brick and mortar store. Out of the box, the volume of this unit could not be adjusted, either manually or by the remote. The affiliated vendor, ElectroGalaxy, has not replied to my three attempts(phone, email) to contact them for a return authorization. It appears that purchasing these units has become a lottery, and no product support from the vendor. Disappointing that Amazon involves itself with unscrupulous vendors like ElectroGalaxy.