Mary Halvorson is in the midst of a lot of touring, and in her travels she uses several different amps - two of her favorites are the Epiphone Valve Junior and s small amp by Matrix. Unfortunately, Mary's usual amp is a solid state Fender Deluxe, though she yearns for something better with tubes for warmer tone.

Check out this video for Mary's take on amplification, tone, and the changes in your tone resulting from playing rooms of all shapes and sizes.