Just bought my first tube amp, the Vox AC10C1, hoping for a better tone than the solid state Champion 40 I've been using. Right out of the box, I wasn't too impressed with the Vox. It sounds very boxy and incredibly thin and bright. I have the Greenback speaker in it. I'm playing an Epiphone ES 339 through it which isn't an overly bright guitar. It does seem to be calming down a bit the more I play it, so I'm hoping this is just the break in tone. Anyone else feel that way when they first heard their new AC10?