If it ain't broke don't fix it.......other then that, practice.....practice.....practice.mxr2000 said:what mods can be perform to the mark IV to make it more toneful and aggressive..
flogger said:no call to get nasty and mention Petrucci , when most any squire toting kid at guitar center will do
Boogiebabies said:4 6L6's, Mid Boost and finding the right speaker. Pentode will give you more thump, but as far as aggressive, the amps already a serial killer.
Also, pull everything but the presence pot.
cool thanks stuff like this is what i was looking to know... 8)tubeydude said:I made some mods to mine just to let the tubes run cooler. (See my first post in this forum.) I did add a bias adjust to mine so I could run different tubes and properly adjust them. I do run all JJ ECC83 and one 81 in the preamp section. I also use just 2 KT77's in the power section in the outer two sockets. It is PLENTY loud. Adjusting the bias a bit hotter than factory did open up the sound of the amp, especially the clean channel, but it was not night and day. The MKIV, at least mine, and most from what I've heard don't really run the outer tubes in "true class A." It depends on who you ask, of course, as there is definitely room for interpretation. However, that's a can of worms I'll not go further into. The outer two are certainly more class A than the inner two.
I have made no circuit based tonal mods to the amp at all. I think it sounds pretty sweet just as it is. If you can't get your tone out of it, it is not the amp's fault.
Enjoy your amp and spend a little time with it and don't be afraid to try strange combos of settings.
Erik
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