The diagram I posted separates the preamp ground from the power amp.JMPGuitars wrote: ↑Sun 05/23/21 12:40 pm
One of the reasons I personally have always separated the preamp from the power amp grounds is because if you try to use a single star ground, and you turn up the master and preamp gain/volume knobs, you will most likely get loud/high pitched squeals.
I also want to point out that this has nothing to do with hi-fi vs guitar. Constantly falling back on that refrain whenever there's a disagreement is disrespectful, and it's a disservice to other readers. I make a concerted effort to provide data and reasoning to make my points. It would be appreciated if you would do the same. Also, if experts you respect have published theories that contradict my position, please quote the specifics. I don't have time to read an entire paper for the purpose of guessing which part you consider relevant.
I'll add here that I do value your experience in this genre of electronics. Your wisdom regarding tone, distortion, speakers, etc. etc. is substantial and very welcome. I only ask that you not assume the areas of expertise I bring to the table are any less important or correct.
Jack