Assuming you're talking about the amplifier modeler effects in the guitar effects - I don't think so. There's just what you see when you enter the "guitar effects" and scroll to "amp". It seems to list different cabinet types ie: 4x10, 1x12, etc.... I assume the letters "A" and "B" are supposed to designate the amplifier "class" type. Keep in mind that's an assumption. I haven't spent hardly any time with the guitar amplifier effects as they are piss poor and borderline unusable. For very little $ - you can buy outboard multi effects that blow away what's built into the DP.