Hi guys, I hope you could help me. I have problem with my new EBS gorm 210. I play with a fender Stu ham bass on it. In some ocassions the volume of the amp is going mute suddenly and doesnt play...also it has much hiss. I checked bass battery, i clean the potentiometers...all did it properly... Is it the amp or the bass?? it doesnt do it all the time.... I am just so despair ,of thinking to sell my new amp and buy the new redhead SWR.... What you think?? thanks a lot for your help.