03-30-2022, 03:49 PM
(03-30-2022, 03:09 PM)journeyman Wrote: The early Ampegs did not use a grounding plug, so with nothing plugged in, they have that ground hum. Does it dissappear when you plug your guitar in? My M-12 is the same. I recently got a 1958 Jet and had the amp tech install modern Switchcraft input jacks and there is no ground hum when I unplug the guitar. Let us know, because if it does this with the guitar plugged in, there are other issues that can be addressed.
Thanks for the reply Journeyman,
A three prong cord was attached. The noise occurs with when nothing is plugged into the amp and when the guitar was plugged in.
I did notice today that after playing through the amp for about 30 mins, the noise was better, not great but better.