Hello All. I'm trying to figure out how a floating (ungrounded) output stage works in a tube amp. I have built a Decware Zen SE84 from both the PCB and in a point to point version. I know that the outputs of these amps are bridgeable in both series and parallel, and I have done so with the point to point one. How exactly does this work, and how can it be applied to any other amplifier that I build? I am hoping to build a couple of single ended EL34 amps that I can bridge to double their output as a set of monoblocks when I want to. The SE84 uses an output transformer that is 8K to 6 Ohms or 9.8K to 6 Ohms, while a typical EL84 uses 5K to 8 Ohms. This gives a SE84 lower power output than a normal EL84 amp, but allows it to put out more than double when bridged. I'm hoping that someone can help me with an explanation of how it works, and how the principal can be applied to other tube amplifiers. I have looked online with no success. Thanks in advance for your help.