I recently purchased a IP3000. When with bluetooth and my ipad, the sound is big, bold, - super in every way. When I put anything through the inputs: guitar with 1/4", ipad with 3.5mm to 1/4" adapter, microphone input, etc , I must turn the volume up to maximum to get any sound at all, and there is a huge amount of background noise. These same units through any other powered speaker work great. Must I have a mixer for just a guitar and mic? What am I doing wrong? Or do I have a defective unit. I tried to update the firmware - currently at 1.0.2, but the button on the ios app does not swipe.