Postby Wildone » 05 Mar 2014, 08:59
RFI (radio frequency interference) is usually caused by bad cables, bad solder joints, long unshielded wires from the input jack to the first tube and/or bad ground, no "grid stopper" resistor on the grid of the first preamp tube, or no tube shields on the tubes. In some cases, RFI can get in on the AC mains. Possible fixes:
First, unplug the cable to see if the RFI goes away. If so, it is likely the cable or the guitar picking it up, or lack of grid stopper resistor on the first tube.
Gibson R8 - Gibson Explorer - Gibson R7 Goldtop
Marshall 2466 - Marshall JMD1 - Marshall 1987
No one wants to hear 64 bars full of 32nd-notes except the douche-bag blowing them from the stage.