Thanks a ton for the help guys. I spoke with Chad before I got on the forum and he suggested that it was probably a tube issue. I just wasn't able to isolate which one is acting up. I unplug my amp everytime I am done playing and that hasnt fixed anything, at least up to this point. I need to just bite the bullet and order new tubes. The crackling drives me insane! I have been looking at Tung-Sols. What do you guys recommend? I like the vintage RCA's but I am looking for somthing a little more affordable. Thanks again for the advice.