I bought this preamp a couple of weeks ago, put it in my bass connnected the battery, there comes a sound but it is rather low and distorted. First i thought it was the battert, changed and testet the conncetion/soldering on everything. Same sound. Now i wonder is the preamp fried ? Is there any way to find out what has happended ? Or should i just chew the loss and buy a new one ? Thanks in advance for any answers.