Bought a used MARK IV Head from Guitar Center. A or B??

[axelfatu]

Guys, I got a great deal (I think) for a used mint MARK IV Head at Guitar Center ($1100). I wanted to know if the head was an A or a B version. I think the rep told me it was a B, but how can I confirm it? Where is the serial # located? I appreciate any info.. see pics below!

 

[Glockaxis]

B version.

 

[axelfatu]

B version.

How did you know? Just curious..

 

[Glockaxis]

The FX loop inputs on the back are side by side like this oOo


On the A version they would be in a square/box format.

 

[WillPlayForFood]

Defintely B version. Has the stereo effects loop with satellite send. The A's don't have that. Yes, turns out the config is as Glock said, too. However, the reason for the config, is the stereo loop :wink:

 

[visualrocker69]

And look at how close "Mark IV' is to "Standby". There's more distance in the A version.

 

[Mountain Fever]

As for the serial number...if you turn the unit upside down, it should be on a sticker next to the transformer.

 

[Aart]

New style all black chassis, stereo loop, recto style channel selector.

Definately a B.


Btw, it has JJ 6l6 powertubes, I like them, hope you do.