Big difference between Mark IV A and B or...

  • Thread starter Thread starter skoora
  • Start date Start date
IMHO, not really enough to matter. The B has a little bit tighter low end.
 
Marshall Freak":1zb0bp40 said:
IMHO, not really enough to matter. The B has a little bit tighter low end.
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That's exactly what I've heard. If you post this question on the mesa forum you'll receive the "true" differences. Notice the " "s (I really don't think the difference is, as Marshall Freak stated, "enough to matter."
 
very small, if even noticeable at all. a few cosmetic changes on the back of the head.

steve
 
droptrd":3qjyafjg said:
The loops different isnt it?
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Right, the loops are different. R2 was tweaked to have more gain. The lead channel was tweaked slightly, not sure how. As far as tubes, the IVA has 4 12AX7's and 1 12AT7's. The IVB has 5 12AX7's.

It seems like most people prefer the IVB. I have a mark IVA that I love, great amp....
 
I'm wanting to get one and I'm seeing an A and a B for sale. I mainly intend to use it for the lead channel Graphic V thing but also want to experiment with slightly broken up rock tones with it too. Basically my poor man's Fender but metal ready.
 
skoora":2t9kv8rc said:
I'm wanting to get one and I'm seeing an A and a B for sale. I mainly intend to use it for the lead channel Graphic V thing but also want to experiment with slightly broken up rock tones with it too. Basically my poor man's Fender but metal ready.
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R2 is supposed to be better on the IVB, so I would go with the IVB just based on that. I like boosting R2 on my IVA, either a Timmy or Maxon OD-808 works great for that....
 
It's a noticeable difference, i owned an A version which was a long chassis but wanted a shorty so i got a B version. Noticed the difference right away, but i don't think it's enough to dump one for the other. The B has a little more preamp gain and grind.
 
some dude":1t92lk49 said:
petejt":1t92lk49 said:
skoora":1t92lk49 said:
too subtle to matter?
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Too subtle even for TGP to obsess over.
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$5 says that after 3 pages they'd have you convinced it was a totally different amp...
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Indeed. Let's be serious here, nothing is too subtle for TGP
 
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