A while back I thought about what would happen if one were to build a small and light tube amp with just enough output to drive a cab at home and match that with a powerful class D unit. So basically, you get the tube sparkle from the preamp, plus if you so desire, the compression from the powertubes, basically all the tonal magic. At home, you set that amp on top of your practice cab and delve into your sonic bliss. When you play out, you snag up that tiny poweramp and drive your desired tone into the big cabs, reinforced by raw class D power. For me, it's always been the compression of the powertubes, set just to the brink of breaking up that did the sound. I run my pre section fairly clean. So the choice is between a class D amp that delivers gig-worthy levels of power while fitting into your gigbag but lacks the tubey mojo --- or a big ass tube head that either needs a second person to be carried for longer (SVT) or one of those super fancy models that can be carried alone, but cost way above two grand (mesa prodigy), even used. Now after reading a bit about the Ampeg Pf-20, I found that this amp can run without a load and can send a DI signal from the preamp (as usual) but also one from the output transformer. Should such a signal, driven into a quality class D poweramp, not sound a lot like a cranked tube amp (which it basically is) ?