Is my Mark II a Mark IIC+?


How can you determine if a Mark II is a Mark IIC+?

We began building Mark IIC+ amps at approximately serial Number 12400 and there were roughly 2600 original IIC+ amps made. However, many owners of earlier Mark II models had their amps converted to a IIC+. So, how do you know if a Mark II in your possession is a IIC+ or has been modified to be a IIC+? Try the Loop Test...

The Loop Test

      1. Plug your guitar into the Effects Return jack using an instrument cable
      2. Switch the amplifier to Lead mode
      3. Play a note, let it ring and then rotate the Lead Drive and Gain controls
      4. If these controls have NO effect on the volume and sound you have a IIC+

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