Mark IV model evolution

[Gordman]

First post from a new member. As always when joining a new forum, I want to thank everyone for all I've learned here as a "lurker."

I'm in the market for my first Boogie, and I've decided I want a Mark IV for its 3-channel versatility and endless tone shaping options. I've done the Line6 AX2 thing, so I have no fear of tweaking, but I really prefer the tube vibe of my other amps.

As an admitted "techie," I research things to death before making a big purchase like this, and I'm trying to find out more information about how the Mark IV has evolved over its lifetime. I've heard comments(rumors?) about early ones sounding richer but having a few component problems, and newer ones sounding sterile while being more refined, but there doesn't seem to much info out there with all the facts about production changes, potential problems, recommended mods, tone differences, etc. across the different model years. Ian's Boogie Files site has great info about the earlier Marks, and I was hoping there was similar info available somewhere about the Mark IV. I know it really doesn't have the same "stripe" differences like the III's, but are certain years generally considered sweeter than others? Are there years to avoid due to reliability problems? Are they all so similar that it doesn't really matter?

I'd appreciate any comments from you folks who know the whole story, or pointers to any other web resources that might go into further detail.

Thanks!

 

[908ssp]

Are you the same Gordman researching Parkers? You sure sound like it. Welcome to the Boogie board. I don't have a MKIV but do have a couple of Boogies and the Parkers sound terrific through them.

 

[Boogiebabies]

I have a 12/93 MK IV 1X12 Combo with the EV12L. It is the best sounding MK IV I have ever played. This particular one can cop a IIC+ on a good day with no problem. The evolution may be difficult to follow as this is probably the most produced Mesa ever and no real serial numbers or time line to document circuit changes. George Mueller at Mesa may be the guy to talk to. He drew the schematic for the MK IV, but is not the most personable guy. He is very intellegent, precise and detail oriented, so have your questions ready.

 

[Gordman]

Hi Alex, how'd you guess? :lol: Obviously, the over-analytical engineer in me shines through wherever I go. Sorry you have to listen to my ultra-detailed questions in two places. Hope you can cut me a little slack, as I'm new to both the Boogie and Parker worlds even though I've been a recreational musician for most of my 40 years. I just need to get a really thorough technical understanding of things before stepping up to this level so I can make the right choices on my first attempts and avoid any buyer's remorse.

I've learned a lot from you, especially on the Parker side, and I really appreciate you sharing your wisdom and experience on both forums!