After trying to purchase a vintage Trace preamp (seller decided he wanted to keep it) I've decided I'm going to start saving for one of the new heads. In this video the guy from Trace mentions that the heads have a tube between the output and the power section (?) that really warms up the tone. I tried contacting Trace to see if all of their heads have this feature, but I've received no answer. Does anyone know if all the new amps share this feature or if it is exclusive of the 12 band range?