Hi, I'm trying to find an answer to the output using Mainstage 2.1.1 with a tube amplifier. Will the amplifier color or make the patches not sound as they are set when using headphones? I have been using powered PA speakers which are FR/FR but would like to use my amplifier. Are there any specific settings that can be set once on the amplifier to make all the patches sound as they do when using FR/FR speakers, through a PA or headphones? I attempted to use the effect input on the rear of the amplifier and got no output at all. When I plug in to the front like you would when plugging your guitar to the main input on the front it seems to effect the tone and sound of the patches. Anyone using a tube amp with Mainstage 2.1.1 with success? Thanks for taking time to read this!