Hi all, I got a PRS 30 combo from ebay and am wondering if it's broken. Here is why, it's all high end with very little bass. I have to turn all the trebel down and bright switch off to get it to sound reasonably (with a les paul). I don't know if this is how it's supposed to sound, it doesn't seem right. Other than that it sounds great. Has anyone else experienced this? Does anyone know what's going on?