| These are the Mesas that are actually usable. The higher the number, the more features and the longer it takes you to get you tone, but the more choices you have. The mark IV lets you use two sets of tubes of power tubes which you can run simultaneously or set by set in class A or AB, triode or pentode. I haven't had much experience first hand with the IIc or III but I think they are quite similar. The IIc is a classic amp used by people from Santana to James Hetfield. |