Is there a parameter that is equivalent to a negative Feedback control?

[kmanick]

I just got my JVM back from my tech and had him do a couple of mods to it.
One was adding a pot that allows me to change the negative feedback.
This mod really opened up the amp, so it got me thinking "is there something similar to this I can do to my JVM patches?"

 

[mr_fender]

That would be the NEG FDBK parameter in the amp block.

 

[chris]

mr_fender, did you ever get a pm from me? maybe a month ago now?

 

[Gamedojo]

FYI, basically the only two elements that TRUELY made Marshall amps so different in 12-15 years of the Four Hole era is

the bright cap (100pf up to 5000pf) and the
Negative feedback amount (more early one, much less later on)

other subtle elements effected the sounds, but nothing so much as these two elements IMO.

Increasing the NEg FDBK in the Axe Fx is a great trick I use to tighten up tones.