This was a bitter disappointment. One of the features we expected to get the most use from was the volume control. However, if we raise the volume much more than a quarter of a setting, we get horrific feedback (screeching). Nothing seems to help and when I sent a note to the manufacturer for advice, I never received an answer. Unfortunately I'd already disposed of the packing info when we discovered the problem, so it looks like it'll hit the trash. Save your money and don't purchase this item.