Any effects have problems with handling 18 volt preamps. Specifically EHX Stereo Electric Mistress and Micro Q Tron Boss OC3 Digitech Synth Bass Wah MXR EVH phase 90 I am thinking of buying these eventually... and I am getting a new bass with an 18 volt Audere pre and don't want to fry anything. I remember reading somewhere that some effects can't properly handle 18 volt basses. Anybody have experience with this???