i think you are better off using the line out mode on the thd and then getting an inexpensive ss poweramp to reamp through your guitar cabs. That basically solves the geatest problem with tube amps, and why do so few people do it that way?.
now going off topic a little.....most poweramps are stereo so now you have the option of using a wet/dry set up if you really wana go crazy
now going off topic a little.....most poweramps are stereo so now you have the option of using a wet/dry set up if you really wana go crazy